title:
On the correlation between the binding energies of the triton and the
  alpha-particle

abstract:
  We consider the correlation between the binding energies of the triton and
the alpha-particle which is empirically observed in calculations employing
different phenomenological nucleon-nucleon interactions. Using an effective
quantum mechanics approach for short-range interactions with large scattering
length |a| >> l, where l is the natural low-energy length scale, we construct
the effective interaction potential at leading order in l/|a|. In order to
renormalize the four-nucleon system, it is sufficient to include a
SU(4)-symmetric one-parameter three-nucleon interaction in addition to the
S-wave nucleon-nucleon interactions. The absence of a four-nucleon force at
this order explains the empirically observed correlation between the binding
energies of the triton and the alpha-particle. We calculate this correlation
and obtain a prediction for the alpha-particle binding energy. Corrections to
our results are suppressed by l/|a|.


title: Weak response of nuclei

abstract:
  We discuss some differences and similarities between electron and neutrino
scattering off atomic nuclei. We find that, in the giant resonance region, the
two processes excite different nuclear modes, therefore the weak and the
electromagnetic nuclear responses are rather different. In any case, the
scattering of electrons and photons is the best guide we have to test the
validity of our nuclear models and their prediction power. The experience in
describing electromagnetic excitations of the nucleus, suggests that, when the
nucleus is excited in the continuum, the re-interaction between the emitted
nucleon and the remaining nucleus should not be neglected. A simple model
taking into account this final state interaction is proposed, and applied to
the neutrino scattering off 16O nucleus.


title: Quark Propagation in the Presence of a A_\mu^aA_a^\mu> Condensate

abstract:
  There is a good deal of current interest in the condensate g^2A_\mu^aA_a^\mu>
which has recently be shown to be the Landau gauge version of a more general
gauge-invariant expression. In the present work we consider quark propagation
in the presence of such a condensate which we assume to be present in the
vacuum. We describe the vacuum as a random medium of gluon fields. We discuss
quark propagation in that medium and show that the quark propagator has no
on-mass-shell pole indicating that a quark cannot propagate over extended
distances. That is, the quark is a nonpropagating mode in the gluon condensate.


title: Ratio of the proton electromagnetic form factors from meson dressing

abstract:
  The Dressed K-matrix Model, developed previously for low- and
intermediate-energy Compton scattering, is generalized to calculate the
photon-nucleon vertex with a virtual photon and an off-shell nucleon. Using
this model, the ratio of the proton electromagnetic form factors is computed.
The calculated ratio is in excellent agreement with the ratio measured in
polarized electron-proton scattering.


title: Calculation of heavy ion e+ e- pair production to all orders in Z alpha

abstract:
  The heavy ion total cross section for continuum e+ e- pair production has
been calculated to all orders in Z alpha. The formula resulting from an exact
solution of the semiclassical Dirac equation in the ultrarelativistic limit is
evaluated numerically. An energy dependent spatial cutoff of the heavy ion
potential is utilized, leading to an exact formula agreeing with the known
perturbative formula in the ultrarelativistic, perturbative limit. Cross
sections and sample momentum distributions are evaluated for heavy ion beams at
SPS, RHIC, and LHC energies. e+ e- pair production probabilities are found to
be reduced from perturbation theory with increasing charge of the colliding
heavy ions and for all energy and momentum regions investigated.


title: Hydrodynamic afterburner for the CGC at RHIC

abstract:
  Firstly, we give a short review about the hydrodynamic model and its
application to the elliptic flow phenomena in relativistic heavy ion
collisions. Secondly, we show the first approach to construct a unified model
for the description of the dynamics in relativistic heavy ion collisions.


title:
Dynamic aspect of the chiral phase transition in the mode coupling
  theory

abstract:
  We analyze the dynamic aspect of the chiral phase transition. We apply the
mode coupling theory to the linear sigma model and derive the kinetic equation
for the chiral phase transition. We challenge Hohenberg and Halperin's
classification scheme of dynamic critical phenomena in which the dynamic
universality class of the chiral phase transition has been identified with that
of the antiferromagnet. We point out a crucial difference between the chiral
dynamics and the antiferromagnet system. We also calculate the dynamic critical
exponent for the chiral phase transition. Our result is $z=1-\eta/2\cong 0.98$
which is contrasted with $z=d/2=1.5$ of the antiferromagnet.


title:
Collective flow of open and hidden charm in Au+Au collisions at
  $\sqrt{s}$ = 200 GeV

abstract:
  We study the collective flow of open charm mesons and charmonia in Au+Au
collisions at $\sqrt{s}$ = 200 GeV within the hadron-string-dynamics (HSD)
transport approach. The detailed studies show that the coupling of $D,\bar{D}$
mesons to the light hadrons leads to comparable directed and elliptic flow as
for the light mesons. This also holds approximately for $J/\Psi$ mesons since
more than 50% of the final charmonia for central and mid-central collisions
stem from $D+\bar{D}$ induced reactions in the transport calculations. The
transverse momentum spectra of $D,\bar{D}$ mesons and $J/\Psi$'s are only very
moderately changed by the (pre-)hadronic interactions in HSD which can be
traced back to the collective flow generated by elastic interactions with the
light hadrons.


title: Correlated nucleons in configuration space

abstract:
  Several recent studies have dealt with the effects of short range
correlations on the momentum distribution of nucleons in nuclei. Here we
investigate the correlation effects on the density and spectral distribution in
coordinate space. A combination of experimental data and spectral functions
calculated from realistic N-N interactions allows us to resolve a recently
uncovered discrepancy with occupation of quasi-particle states derived from
(e,e'p) data.


title: The light-front vacuum and dynamics

abstract:
  I give a quantum theoretical description of kinematically invariant vacuua on
the algebra of free fields restricted to a light front and discuss the relation
between the light-front Hamiltonian, P-, the vacuum, and Poincare invariance.
This provides a quantum theoretical description of zero modes.


title:
Role of the Pauli principle in collective-model coupled-channels
  calculations

abstract:
  A multi-channel algebraic scattering theory, to find solutions of
coupled-channel scattering problems with interactions determined by collective
models, has been structured to ensure that the Pauli principle is not violated.
By tracking the results in the zero coupling limit, a correct interpretation of
the sub-threshold and resonant spectra of the compound system can be made. As
an example, the neutron-12C system is studied defining properties of 13C to 10
MeV excitation. Accounting for the Pauli principle in collective
coupled-channels models is crucial to the outcome.


title: A General Effective Theory for Dense Quark Matter

abstract:
  A general effective action for quark matter at nonzero temperature and/or
nonzero density is derived. Irrelevant quark modes are distinguished from
relevant quark modes, and hard from soft gluon modes, by introducing two
separate cut-offs in momentum space, one for quarks, $\Lambda_q$, and one for
gluons, $\Lambda_g$. Irrelevant quark modes and hard gluon modes are then
exactly integrated out in the functional integral representation of the QCD
partition function. Depending on the specific choice for $\Lambda_q$ and
$\Lambda_g$, the resulting effective action contains well-known effective
actions for hot and/or dense quark matter, for instance the ``Hard Thermal
Loop'' (HTL) or the ``Hard Dense Loop'' (HDL) action, as well as the
high-density effective theory proposed by Hong and others.


title: On Raynal's posting in arXiv (nucl-th/0407060)

abstract:
  With nucl-th/0407060, Jacques Raynal uses the arXiv in a way which does not
conform to standard professional practices. His posting contains many
statements that are beyond the borders of acceptable scientific disputes, with
the scope to defame colleagues by manifestly false or misleading statements. In
this comment we reject the three ``critiques'' expressed by Raynal. 1. The fact
that we possibly misquoted our references. 2. The role of the Pauli principle
in these kind of calculations. 3. The nature and limits of our coupled-channel
potential model. Raynal's postings unfairly detract from the importance of our
work, which we published in Nuclear Physics A728, 65 (2003), on a new approach,
Multi-Channel-Algebraic-Scattering (MCAS), for coupled-channel calculations.
With the MCAS approach we were able to identify systematically all low-energy
compound resonances, and to include effectively the Pauli principle in
collective, geometrical-type, macroscopic models of multichannel interaction.
This represents a clear advantage with respect to the current distribution of
the ECIS formulation.


title: Critical densities for the Skyrme type effective interactions

abstract:
  We use the stability conditions of the Landau parameters for the symmetric
nuclear matter and pure neutron matter to calculate the critical densities for
the Skyrme type effective nucleon-nucleon interactions. We find that the
critical density can be maximized by adjusting appropriately the values of the
enhancement factor $\kappa$ associated with isovector giant dipole resonance,
the quantity $L$ which is directly related to the slope of the symmetry energy
and the Landau parameter $G_0^\prime$. However, restricting $\kappa$, $L$ and
$G_0^\prime$ to vary within acceptable limits reduces the maximum value for the
critical density $\tilde\rho_{cr}$ by $\sim 25%$. We also show that among the
various quantities characterizing the symmetric nuclear matter,
$\tilde\rho_{cr}$ depends strongly on the isoscalar effective mass $m^*/m$ and
surface energy coefficient $E_s$. For realistic values of $m^*/m$ and $E_s$ we
get $\tilde\rho_{cr} = 2\rho_0$ to $ 3\rho_0$ ($\rho_0 = 0.16$fm$^{-3}$).


title: The Vector Probe in Heavy-Ion Reactions

abstract:
  We review essential elements in using the $J^P=1^-$ channel as a probe for
hot and dense matter as produced in (ultra-) relativistic collisions of heavy
nuclei. The uniqueness of the vector channel resides in the fact that it
directly couples to photons, both real and virtual (dileptons), enabling the
study of thermal radiation and in-medium effects on both light ($\rho, \omega,
\phi$) and heavy ($\Psi, \Upsilon$) vector mesons. We emphasize the importance
of interrelations between photons and dileptons, and characterize relevant
energy/mass regimes through connections to Quark-Gluon-Plasma emission and
chiral symmetry restoration. Based on critical analysis of our current
understanding of data from fixed-target energies, we identify open key
questions to be addressed.


title: Bulk effects in the coherent inelastic scattering of ultracold neutrons

abstract:
  With the use of theory developed earlier, bulk effects in ultracold neutron
coherent inelastic scattering are considered both for solid and liquid target
samples related to energy and momentum exchange with phonon and diffusion-like
modes. For the neutron in a material trap, differential and integral
probabilities for the energy transfer per bounce are presented in a simple
analytic form which exhibits the parameter dependence. As an example, the
theoretical values for the ultracold neutron loss rate from a storage bottle
with Fomblin coated walls and stainless steel walls are evaluated. Possible
contribution from incoherent inelastic scattering on hydrogen contamination is
discussed.


title: Deformations in N=14 isotones

abstract:
  Systematic analysis of deformations in neutron-rich N=14 isotones was done
based on the method of antisymmetrized molecular dynamics. The property of the
shape coexistence in $^{28}$Si, which is known to have the oblate ground state
and the prolate excited states, was successfully described. The results suggest
that the shape coexistence may occur also in neutron-rich N=14 nuclei as well
as $^{28}$Si. It was found that the oblate neutron shapes are favored because
of the spin-orbit force in most of N=14 isotones. $Q$ moments and $E2$
transition strengths in the neutron-rich nuclei were discussed in relation to
the intrinsic deformations, and a possible difference between the proton and
neutron deformations in $^{24}$Ne was proposed.


title:
Variation of hadron masses in nuclear matter in the relativistic Hartree
  approximation

abstract:
  We study the modification of hadron masses due to the vacuum polarization
using the chiral sigma model, which is extended to generate the $\omega$ meson
mass by the sigma condensation in the vacuum in the same way as the nucleon
mass. The results obtained in the chiral sigma model are compared with those
obtained in the Walecka model which includes $\sigma$ and $\omega$ mesons in a
non-chiral fashion. It is shown that both the nucleon mass and the $\omega$
meson mass decrease in nuclear medium, while the $\sigma$ meson mass increases
at finite density in the chiral sigma model.


title: Partonic effects on anisotropic flows at RHIC

abstract:
  We report recent results from a multiphase transport (AMPT) model on the
azimuthal anisotropies of particle momentum distributions in heavy ion
collisions at the Relativistic Heavy Ion Collider. These include higher-order
anisotropic flows and their scaling, the rapidity dependence of anisotropic
flows, and the elliptic flow of charm quarks.


title:
The Skyrme energy functional and low lying 2+ states in Sn, Cd and Te
  isotopes

abstract:
  We study the predictive power of Skyrme forces with respect to low lying
quadrupole spectra along the chains of Sn, Cd, and Te isotopes. Excitation
energies and B(E2) values for the lowest quadrupole states are computed from a
collective Schroedinger equation which as deduced through collective path
generated by constraint Skyrme-Hartree-Fock (SHF) plus self-consistent cranking
for the dynamical response. We compare the results from four different Skyrme
forces, all treated with two different pairing forces (volume versus
density-dependent pairing). The region around the neutron shell closure N=82 is
very sensitive to changes in the Skyrme while the mid-shell isotopes in the
region N<82 depend mainly on the adjustment of pairing. The neutron rich
isotopes are most sensitive and depend on both aspects.


title: Nuclear structure far from stability

abstract:
  Modern nuclear structure theory is rapidly evolving towards regions of exotic
short-lived nuclei far from stability, nuclear astrophysics applications, and
bridging the gap between low-energy QCD and the phenomenology of finite nuclei.
The principal objective is to build a consistent microscopic theoretical
framework that will provide a unified description of bulk properties, nuclear
excitations and reactions. Stringent constraints on the microscopic approach to
nuclear dynamics, effective nuclear interactions, and nuclear energy density
functionals, are obtained from studies of the structure and stability of exotic
nuclei with extreme isospin values, as well as extended asymmetric nucleonic
matter. Recent theoretical advances in the description of structure phenomena
in exotic nuclei far from stability are reviewed.


title: Sum rule of the correlation function

abstract:
  We discuss a sum rule satisfied by the correlation function of two particles
with small relative momenta. The sum rule, which results from the completeness
condition of the quantum states of the two particles, is first derived and then
we check how it works in practice. The sum rule is shown to be trivially
satisfied by free particle pair, and then there are considered three different
systems of interacting particles. We discuss a pair of neutron and proton in
the s-wave approximation and the case of the so-called hard spheres with the
phase shifts taken into account up to l=4. Finally, the Coulomb system of two
charged particles is analyzed.


title:
Nuclear Structure Calculations with Coupled Cluster Methods from Quantum
  Chemistry

abstract:
  We present several coupled-cluster calculations of ground and excited states
of 4He and 16O employing methods from quantum chemistry. A comparison of
coupled cluster results with the results of exact diagonalization of the
hamiltonian in the same model space and other truncated shell-model
calculations shows that the quantum chemistry inspired coupled cluster
approximations provide an excellent description of ground and excited states of
nuclei, with much less computational effort than traditional large-scale
shell-model approaches. Unless truncations are made, for nuclei like 16O,
full-fledged shell-model calculations with four or more major shells are not
possible. However, these and even larger systems can be studied with the
coupled cluster methods due to the polynomial rather than factorial scaling
inherent in standard shell-model studies. This makes the coupled cluster
approaches, developed in quantum chemistry, viable methods for describing
weakly bound systems of interest for future nuclear facilities.


title:
Warm strange hadronic matter in an effective model with a weak Y-Y
  interaction

abstract:
  An effective model is used to study the equation of state of warm strange
hadronic matter with nucleons, Lambda-hyperons, Xi-hyperons, sigmastar and phi.
In the calculation, a newest weak Y-Y interaction deduced from the recent
observation of a He double hypernucleus is adopted. Employing this effective
model, the results with strong Y-Y interaction and weak Y-Y interaction are
compared.


title: Effective Field Theories of Light Nuclei

abstract:
  Effective field theories have been developed for the description of light,
shallow nuclei. I review results for two- and three-nucleon systems, and
discuss their extension to halo nuclei.


title:
Improved Exponential model with pairing attenuation and the backbending
  phenomenon

abstract:
  A modified version of the exponential model with paring attenuation is
proposed, and used to describe successfully the backbending of the moment of
inertia, in even-even nuclei, not only in well-deformed nuclei but also in
slightly deformed nuclei. The model remarkably fits good the experimental
observation with a few parameters.


title:
Alpha-decay properties of superheavy elements $Z=113-125$ in the
  relativistic mean-field theory with vector self-coupling of $\omega$ meson

abstract:
  We have investigated properties of $\alpha$-decay chains of recently produced
superheavy elements Z=115 and Z=113 using the new Lagrangian model NL-SV1 with
inclusion of the vector self-coupling of $\omega$ meson in the framework of the
relativistic mean-field theory. It is shown that the experimentally observed
alpha-decay energies and half-lives are reproduced well by this Lagrangian
model. Further calculations for the heavier elements with Z=117-125 show that
these nuclei are superdeformed with a prolate shape in the ground state. A
superdeformed shell-closure at Z=118 lends an additional binding and an extra
stability to nuclei in this region. Consequently, it is predicted that the
corresponding $Q_\alpha$ values provide $\alpha$-decay half-lives for heavier
superheavy nuclei within the experimentally feasible conditions. The results
are compared with those of macroscopic-microscopic approaches. A perspective of
the difference in shell effects amongst various approaches is presented and its
consequences on superheavy nuclei are discussed.


title: Correlations in Hot Asymmetric Nuclear Matter

abstract:
  The single-particle spectral functions in asymmetric nuclear matter are
computed using the ladder approximation within the theory of finite temperature
Green's functions. The internal energy and the momentum distributions of
protons and neutrons are studied as a function of the density and the asymmetry
of the system. The proton states are more strongly depleted when the asymmetry
increases while the occupation of the neutron states is enhanced as compared to
the symmetric case. The self-consistent Green's function approach leads to
slightly smaller energies as compared to the Brueckner Hartree Fock approach.
This effect increases with density and thereby modifies the saturation density
and leads to smaller symmetry energies.


title:
Apparent Thermalization due to Plasma Instabilities in Quark-Gluon
  Plasma

abstract:
  Hydrodynamical modeling of heavy ion collisions at RHIC suggests that the
quark-gluon plasma (QGP) "thermalizes" in a remarkably short time scale, about
0.6 fm/c. We argue that this should be viewed as indicating fast
isotropization, but not necessarily complete thermalization, of the
non-equilibrium QGP. Non-Abelian plasma instabilities can drive local
isotropization of an anisotropic QGP on a time scale which is faster than
ordinary perturbative scattering processes. As a result, we argue that
theoretical expectations based on weak coupling analysis are not necessarily in
conflict with hydrodynamic modeling of the early part of RHIC collisions,
provided one recognizes the key role of non-Abelian plasma instabilities.


title:
Change in the Nuclear Moment of Inertia at the Number of Neutrons N = 98
  and Isotopic Shift of Atomic Levels

abstract:
  From analysis of experimental data on nuclear rotation, it is found that the
so-called rigid-body value of the nuclear moment of inertia and the
nuclear-radius values associated with the moment of inertia as functions of the
number of nucleons change their behavior at the number of neutrons $N = 98$.
This phenomenon is confirmed by experimental data on the isotopic shifts of
atomic levels.


title: Generalized Seniority Description of Cold Fermi Gases

abstract:
  We suggest that the extension of the Racah seniority description of strongly
interacting fermions in the nuclear shell model is directly generalizable to
describe pairing of atoms in cold Fermi systems. We illustrate this by the
fermionic pairing in the much studied cold two-component gas of Li atoms. Our
pairing interaction is two orders of magnitude stronger than that used in the
usual BCS approach. We also explain why the Racah scheme is less applicable to
nuclei, and discuss the similarities of the strongly-coupled matter in cold
fermion systems and the new form of matter found in RHIC close to T_c.


title: Electromagnetic transitions with effective operators

abstract:
  In the no-core shell model formalism we compute effective one- and two-body
operators, using the Lee-Suzuki procedure within the two-body cluster
approximation. We evaluate the validity of the latter through calculations in
reduced model spaces. In particular, we test the results for the two-body
system and find that indeed the effective operators in the reduced space
reproduce the expectation values or transition strengths computed in the full
space. On the other hand, the renormalization for operators in the case of 6Li
is very weak, suggesting the need for higher-body clusters in computing the
effective interaction.


title:
Neutron Star Properties from an NJL Model Modified to Simulate
  Confinement

abstract:
  The NJL model has recently been extended with a method to simulate
confinement. This leads in mean field approximation to a natural mechanism for
the saturation of nuclear matter. We use the model to investigate the equation
of state of asymmetric nuclear matter and then use it to compute the properties
of neutron stars.


title: Disentangling spatial and flow anisotropy

abstract:
  Two generalisations of the blast-wave model to non-central nuclear collisions
are constructed, and elliptic flow as well as azimuthal dependence of
correlation radii are calculated. Particular attention is paid to how different
azimuthal dependences of transverse flow direction can cause qualitatively
different anisotropic fireballs to give same v_2 as a function of the
transverse momentum. The simultaneous dependence of v_2 and the oscillation of
correlation radii on both spatial and flow anisotropy is studied in great
detail.


title: Collective dynamics of the fireball

abstract:
  I analyse the identified single-particle p_t spectra and two-pion
Bose-Einstein correlations from RHIC. They indicate a massive transverse
expansion and rather short lifetime of the system. The quantitative analysis in
framework of the blast-wave model yields, however, unphysical results and
suggests that the model may not be applicable in description of two-particle
correlations. I then discuss generalisations of the blast-wave model to
non-central collisions and the question how spatial asymmetry can be
disentangled from flow asymmetry in measurements of v_2 and azimuthally
sensitive HBT radii.


title: $\Lambda(1405)$ and $\bar\Lambda(1405)$ in $J/\psi$ four-body decays

abstract:
  We study the structure of the baryon resonances $\Lambda(1405)$ and
$\bar\Lambda(1405)$ in $J/\psi$ four body decays $J/\psi\to \Sigma\bar \Sigma
\pi\pi$ in the framework of a coupled channel chiral unitary approach. With
still sufficient freedom for model parameters, the $\Lambda(1405)$ and
$\bar\Lambda(1405)$ resonances are generated by simultaneously taking the meson
baryon and meson anti-baryon final state interactions into account. The
$\pi\Sigma$ ($\pi\bar\Sigma$) invariant mass distributions peak around 1410
MeV, which favors the assertion that the $\Lambda(1405)$ ($\bar\Lambda(1405)$)
is a superposition of the two $\Lambda(1405)$ ($\bar\Lambda(1405)$) states
which dominantly couple to $\bar K N$ ($K\bar N$) and $\pi\Sigma$
($\pi\bar\Sigma$), respectively. We also calculate the amplitude for isospin
I=1 which gives hints on a possible I=1 baryon resonance in the energy region
of the $\Lambda(1405)$, which up to now has not been observed.


title:
The Instantaneous Bethe-Salpeter Equation and Its Analog: the Breit-like
  Equation

abstract:
  We take ($\mu^\pm e^\mp$) systems and consider the states with quantum number
$J^P=0^-$ as examples, to explore the different contents of the instantaneous
Bethe-Salpeter (BS) equation and its analog, Breit equation, by solving them
exactly. The results show that the two equations are not equivalent, although
they are analogous. Furthermore, we point out that the Breit equation contains
extra un-physical solutions, so it should be abandoned if one wishes to have an
accurate description of the bound states for the instantaneous interacting
binding systems.


title:
Using Electron Scattering Superscaling to predict Charge-changing
  Neutrino Cross Sections in Nuclei

abstract:
  Superscaling analyses of few-GeV inclusive electron scattering from nuclei
are extended to include not only quasielastic processes, but now also into the
region where $\Delta$-excitation dominates. It is shown that, with reasonable
assumptions about the basic nuclear scaling function extracted from data and
information from other studies of the relative roles played by correlation and
MEC effects, the residual strength in the resonance region can be accounted for
through an extended scaling analysis. One observes scaling upon assuming that
the elementary cross section by which one divides the residual to obtain a new
scaling function is dominated by the $N\to\Delta$ transition and employing a
new scaling variable which is suited to the resonance region. This yields a
good representation of the electromagnetic response in both the quasielastic
and $\Delta$ regions. The scaling approach is then inverted and predictions are
made for charge-changing neutrino reactions at energies of a few GeV, with
focus placed on nuclei which are relevant for neutrino oscillation
measurements. For this a relativistic treatment of the required weak
interaction vector and axial-vector currents for both quasielastic and
$\Delta$-excitation processes is presented.


title: Many-Body Physics on the Border of Nuclear Stability

abstract:
  A brief overview is given of the Continuum Shell Model, a novel approach that
extends the traditional nuclear shell model into the domain of unstable nuclei
and nuclear reactions. While some of the theoretical aspects, such as role and
treatment of one- and two-nucleon continuum states, are discussed more in
detail, a special emphasis is made on relation to observed nuclear properties,
including definitions of the decay widths and their relation to the cross
sections, especially in the cases of non-exponential decay. For the chain of He
isotopes we demonstrate the agreement of theoretical results with recent
experimental data. We show how the interplay of internal collectivity and
coherent coupling to continuum gives rise to the universal mechanism of
creating pigmy giant resonances.


title: Three-Body Scattering without Partial Waves

abstract:
  The Faddeev equation for three-body scattering at arbitrary energies is
formulated in momentum space and directly solved in terms of momentum vectors
without employing a partial wave decomposition. In its simplest form the
Faddeev equation for identical bosons is a three-dimensional integral equation
in five variables, magnitudes of relative momenta and angles. The elastic
differential cross section, semi-exclusive d(N,N') cross sections and total
cross sections of both elastic and breakup processes in the intermediate energy
range up to about 1 GeV are calculated based on a Malfliet-Tjon type potential,
and the convergence of the multiple scattering series is investigated in every
case. In general a truncation in the first or second order in the two-body
t-matrix is quite insufficient.


title: Deuteron Compton Scattering: A Random Walk

abstract:
  In this sketch, some recent developments in Compton scattering off the
deuteron are reviewed. The strong energy-dependence of the scalar magnetic
dipole polarisability \beta_M1 turns out to be crucial to understand the data
from Saskatoon at 94 MeV. Chiral Effective Field Theory is used to extract the
static iso-scalar dipole polarisabilities as
\bar{\alpha}^s=12.6\pm1.4_{stat}\pm1.0_{wavefu} and
\bar{\beta}^s=2.3\pm1.7_{stat}\pm0.8_{wavefu}, in units of 10^{-4} fm^3.
Therefore, proton and neutron polarisabilities are identical within error bars.
For details and a better list of references, consult the given references.


title: Pionic atoms probing pi-NN resonances

abstract:
  The pion optical potential generated by the hypothetical pi-NN-coupled
NN-decoupled dibaryon resonance d'(2065) is calculated to the lowest order in
nuclear matter density. The contribution to the pion optical potential is found
to be within the empirical errors, so the d'(2065) existence currently does not
contradict to the observed properties of the pi-nucleus bound states. Future
progress in the pionic X-ray spectroscopy can reveal contributions of pi-NN
resonances to energy levels and widths of the pionic atoms.


title:
Tyree-body mechanisms in the 3^He(e,e'p) reactions at high missing
  momentum

abstract:
  A particular three-body mechanism is responsible for the missing strength
which has been reported in $^3$He(e,e$'$p) reactions at missing momentum above
700 MeV/c. It corresponds to the absorption of the virtual photon by a nucleon
at rest which subsequently propagates on-shell and emits a meson which is
reabsorbed by the pair formed by the two other nucleons. Its amplitude, which
is negligible in photon induced reactions as well as in the electro-production
of an on-shell meson, becomes maximal in the quasi-free kinematics (X=1). It
relates the amplitude of the $^3$He(e,e$'$p)D reaction to the amplitude of $pD$
elastic scattering at backward angles.


title: Light-front field theory of hot and dense quark matter

abstract:
  Extending the concepts of light-front field theory to quantum statistics
provides a novel approach towards nuclear matter under extreme conditions. Such
conditions exist, e.g., in neutron stars or in the early stage of our universe.
They are experimentally expected to occur in heavy ion collisions, e.g., at
RHIC and accelerators to be build at GSI and CERN. Light-front field theory is
particularly suited, since it is based on a relativistic Hamiltonian approach.
It allows us to treat the perturbative as well as the nonperturbative regime of
QCD and also correlations that emerge as a field of few-body physics and is
important for hadronization. Last but not least the Hamiltonian approach is
useful for nonequilibrium processes by utilizing, e.g., the formalism of
nonequilibrium statistical operators.


title:
n-p Interaction Effects on the Double Beta Decay Nuclear Matrix Elements
  for Medium Mass Nuclei

abstract:
  The quality of HFB wave functions are tested by comparing the theoretically
calculated results with the available experimental data for a number of
spectroscopic properties like yrast spectra, reduced B(E2) transition
probabilities, quadrupole moments and g-factors for the nuclei involved in
2$\nu $ $\beta \beta $ decay. It is observed that the np interactions
vis-\`{a}-vis the deformations of the intrinsic ground states of medium mass
nuclei play a crucial role in the fine tuning of the nuclear matrix elements,
M$_{2\nu}.$


title:
Exploring effective interactions through transition charge density study
  of $^{70,72,74,76}\rm Ge$ nuclei

abstract:
  Transition charge density (TCD) for $ 0^+\to 2_1^+ $ excitation have been
calculated for $\rm ^{70,72,74,76}Ge$ nuclei within microscopic variational
framework employing $2p_{3/2}, 1f_{5/2}, 2p_{1/2}$ and $1g_{9/2}$ valence
space. The calculated TCDs for different monopole variants of Kuo interaction
are compared with available experimental results. Other systematics like
reduced transition probabilities B(E2) and static quadrupole moments Q(2) are
also presented. It is observed that the transition density study acts as a
sensitive probe for discriminating the response of different parts of effective
interactions.


title:
Restoration of chiral symmetry in light-front finite temperature field
  theory

abstract:
  We investigate the properties of $qq$ and $q\bar q$ states in hot and dense
quark matter in the framework of light-front finite temperature field theory.
Presently we use the Nambu Jona-Lasinio model of QCD and derive the gap
equation at finite temperature and density. We study pionic and scalar diquark
dynamics in quark matter and calculate the masses and the Mott dissociation as
a function of the temperature $T$ and the chemical potential $\mu$. For the
scalar diquark we determine the critical temperature of color
superconductivity.


title: Dynamics of few-body states in a medium

abstract:
  Strongly interacting matter such as nuclear or quark matter leads to few-body
bound states and correlations of the constituents. As a consequence quantum
chromodynamics has a rich phase structure with spontaneous symmetry breaking,
superconductivity, condensates of different kinds. All this appears in many
astrophysical scenarios. Among them is the formation of hadrns during the early
stage of the Universe, the structure of a neutron star, the formation of nuclei
during a supernova explosion. Some of these extreme conditions can be simulated
in heavy ion colliders. To treat such a hot and dense system we use the Green
function formalism of many-body theory. It turns out that a systematic Dyson
expansion of the Green functions leads to modified few-body equations that are
capable to describe phase transitions, condensates, cluster formation and more.
These equations include self energy corrections and Pauli blocking. We apply
this method to nonrelativistic and relativistic matter. The latter one is
treated on the light front. Because of the medium and the inevitable truncation
of space, the few-body dynamics and states depend on the thermodynamic
parameters of the medium.


title:
Dissociation of hadrons in quark matter within finite temperature field
  theory approach on the light front

abstract:
  We present a relativistic three-body equation to investigate the properties
of nucleons in hot and dense nuclear/quark matter. Within the light front
approach we utilize a zero-range interaction to study the three-body dynamics.
The relativistic in-medium equation is derived within a systematic Dyson
equation approach that includes the dominant medium effects due to Pauli
blocking and self energy corrections. We present the in-medium nucleon mass and
calculate the dissociation of the three-body system.


title: Periodic systems in time: double-well potential

abstract:
  Time analysis of oscillations of a particle between wells in the
one-dimensional double-well potential with infinite high outside walls, based
on wave packet use and energy spectrum analysis, is presented. For the
double-well potential of the form $x^{2}+1/x^{2}$ in the external regions, an
exact analytical solution of the energy spectrum is found (by standard QM
approach), an analysis of oscillation periodicity is fulfilled, an approach for
exact analitical calculation of the oscillation period is proposed (for the
first time for the double-well potential).


title:
Interacting Vector Boson Model Analysis of the ^{160}Dy Excited States
  Spectrum

abstract:
  Analysis of the recently obtained experimental data for collective states of
^{160}Dy is presented. The Interacting Vector Boson Model (IVBM) was applied
for the classification of low lying states with positive parity
0^{+},2^{+},4^{+},6^{+}and for description of rotational ground, S, γ and
two octupole bands. The energies of the bands are reproduced with high accuracy
using only one set of the model parameters for all bands.


title: Polarization Observables for Two-Pion Production off the Nucleon

abstract:
  We develop polarization observables for the processes $\gamma N\to\pi\pi N$
and $\pi N\to\pi\pi N$, using both a helicity and hybrid helicity-transversity
basis. Such observables are crucial if processes that produce final states
consisting of a spin-1/2 baryon and two pseudoscalar mesons are to be fully
exploited for baryon spectroscopy. We derive relationships among the
observables, as well as inequalities that they must satisfy. We also discuss
the observables that must be measured in `complete' experiments, and briefly
examine the prospects for measurement of some of these observables in the near
future.


title:
Determining the $\Theta^+$ quantum numbers through a Kaon induced
  reaction

abstract:
  We study the $K^+p\to \pi^+KN$ reaction with kinematical condition suited to
the production of the $\Theta^+$ resonance. It is shown that in this reaction
with the polarization experiment, a combined consideration of the strength at
the peak and the angular dependence of cross section can help determine the
$\Theta^+$ quantum numbers.


title:
A Pad\'e-aided analysis of nonperturbative $NN$ scattering in $^1S_0$
  channel

abstract:
  We carried out a Pad\'e approximant analysis on a compact factor of the
$T$-matrix for $NN$ scattering to explore the nonperturbative renormalization
prescription in a universal manner. The utilities and virtues for this Pad\'e
analysis were discussed.


title: Restoration of Heavy-Ion Potentials at Intermediate Energies

abstract:
  The microscopic nucleus-nucleus optical potential is constructed basing on
two patterns for real and imaginary parts, each calculated in the framework of
microscopic models and multiplied by two normalizing factors, the free
parameters, fitted to experimental data. The first supplementary model yields
the real and imaginary templates for our potential, and itself reproduces the
scattering amplitude of the microscopic Glauber-Sitenko theory. The other
pattern, for real part only, is the standard double-folding model with the
exchange term included. As a result, we obtain an acceptable agreement with
elastic differential cross-sections.


title: Method for Solving the Many-Body Bound State Nuclear Problem

abstract:
  We present a method based on hyperspherical harmonics to solve the nuclear
many-body problem. It is an extension of accurate methods used for studying
few-body systems to many bodies and is based on the assumption that nucleons in
nuclei interact mainly via pairwise forces.This leads to a two-variable
integro-differential equation which is easy to solve. Unlike methods that
utilize effective interactions, the present one employs directly
nucleon-nucleon potentials and therefore nuclear correlations are included in
an unambiguous way. Three body forces can also be included in the formalism.
Details on how to obtain the various ingredients entering into the equation for
the A-body system are given. Employing our formalism we calculated the binding
energies for closed and open shell nuclei with central forces where the bound
states are defined by a single hyperspherical harmonic. The results found are
in agreement with those obtained by other methods.


title: Hydrodynamic Approaches to Relativistic Heavy Ion Collisions

abstract:
  We give a short review about the hydrodynamic model and its application to
the elliptic flow phenomena and the pion interferometry in relativistic heavy
ion collisions.


title:
The interparticle interaction and noncommutativity of conjugate
  operators in quantum mechanics. $H$-like atoms

abstract:
  A quantum mechanical model for the systems consisting of interacting bodies
is considered. The model takes into account the noncommutativity of the space
and impulse operators and the correlation equations for the indeterminacy of
these quantities. The noncommutativity of the operators is here a result of the
action of the interparticle forces and represents a natural generalization of
the conventional commutation relation for the space and impulse operators for a
single particle. The efficiency of the model is demonstrated by specific
calculations concerning several well-known atomic systems.


title: A microscopic calculation of neutrino neutral reaction on 4He

abstract:
  An ab-initio calculation of the inelastic neutral reaction of neutrino on 4He
is presented, including realistic nuclear force and full final state
interaction among the four nucleons. The calculation uses the powerful
combintation of the Lorentz integral transform (LIT) method and the
hyperspherical-harmonic effective interaction approach (EIHH). The neutrino -
nucleus interaction is taken in the impulse approximation. With respect to
previous calculations, the current work predicts an increased reaction
cross-section by 10%-30% for neutrino temperature up to 15 MeV.


title:
Singlet NN Regularization using a Boundary Condition for OPE and TPE
  potentials

abstract:
  Boundary conditions provide a simple and physically compelling Wilsonian
renormalization method in coordinate space in the framework of effective field
theory as applied to nucleon-nucleon interaction in the non perturbative
regime, enabling to remove unphysical regularization cut-offs while keeping
physical low energy threshold parameters such as the scattering length and
effective range invariant. We illustrate how the method successfully works in
the $^1S_0$ channel for the One Pion Exchange (OPE) and Two Pion Exchange (TPE)
potentials


title: Spin-asymmetry energy of nuclear matter

abstract:
  We calculate the density-dependent spin-asymmetry energy $S(k_f)$ of
isospin-symmetric nuclear matter in the three-loop approximation of chiral
perturbation theory. The interaction contributions to $S(k_f)$ originate from
one-pion exchange, iterated one-pion exchange, and (irreducible) two-pion
exchange with no, single, and double virtual $\Delta$-isobar excitation. We
find that the truncation to $1\pi$-exchange and iterated $1\pi$-exchange terms
(which leads already to a good nuclear matter equation of state) is
spin-unstable, since $S(k_{f0})<0$. The inclusion of the chiral $\pi
N\Delta$-dynamics guarantees the spin-stability of nuclear matter. The
corresponding spin-asymmetry energy $S(k_f)$ stays positive within a wide range
of an undetermined short-range parameter $S_5$ (which we also estimate from
realistic NN-potentials). Our results reemphasize the important role played by
two-pion exchange with virtual $\Delta$-isobar excitation for the nuclear
matter many-body problem. Its explicit inclusion is essential in order to
obtain good bulk and single-particle properties.


title:
Precision calculation for nucleon capture by deuteron with Effective
  Field Theory

abstract:
  We calculate the cross section for radiative capture of neutron by deuteron
$n+d \to 3H+\gamma$ using Effective Field Theory(EFT). The calculation includes
N2LO order and we compare our results with available calculated data below
E=0.2 Mev.


title: Systematics of quadrupolar correlation energies

abstract:
  We calculate correlation energies associated with the quadrupolar shape
degrees of freedom with a view to improving the self-consistent mean-field
theory of nuclear binding energies. The Generator Coordinate Method is employed
using mean-field wave functions and the Skyrme SLy4 interaction. Systematic
results are presented for 605 even-even nuclei of known binding energies, going
from mass A=16 up to the heaviest known. The correlation energies range from
0.5 to 6.0 MeV in magnitude and are rather smooth except for large variations
at magic numbers and in light nuclei. Inclusion of these correlation energies
in the calculated binding energy is found to improve two deficiencies of the
Skyrme mean field theory. The pure mean field theory has an exaggerated shell
effect at neutron magic numbers and addition of the correlation energies reduce
it. The correlations also explain the phenomenon of mutually enhanced magicity,
an interaction between neutron and proton shell effects that is not explicable
in mean field theory.


title:
Two particle rapidity, transverse momentum, and azimuthal correlations
  in relativistic nuclear collisions and transverse radial expansion

abstract:
  At the very first stage of an ultra-relativistic nucleus-nucleus collision
new particles are produced in individual nucleon-nucleon collisions. In the
transverse plane, all particles from a single $NN$ collision are initially
located at the same position. The subsequent transverse radial expansion of the
system creates strong position-momentum correlations and leads to
characteristic rapidity, transverse momentum, and azimuthal correlations among
the produced particles.


title: Auxiliary field method at finite temperature and/or finite density

abstract:
  We discuss the relation between the effective vector meson mass and equation
of state (EOS) for nuclear matter. In the mean field approximation, the EOS
becomes softer due to the reduction of the effective omega-meson mass, if we
assume that the omega-meson mean field is proportional to the baryon density.
We examine the assumption by using the auxiliary field method at finite
temperature and /or density.


title: Coupling Schemes for an n su(2) Spin System

abstract:
  In the framework of the Schwinger boson representation for the su(2)-algebra,
the closed form is derived for the total spin eigenstates which result from the
coupling of n su(2)-spins. In order to demonstrate its usefulness, the
orthogonal set for the so(5)-algebra, which is reduced to four su(2)-spin
systems, is obtained.


title: Level density for deformations of the Gaussian orthogonal ensemble

abstract:
  Formulas are derived for the average level density of deformed, or
transition, Gaussian orthogonal random matrix ensembles. After some general
considerations about Gaussian ensembles we derive formulas for the average
level density for (i) the transition from the Gaussian orthogonal ensemble
(GOE) to the Poisson ensemble and (ii) the transition from the GOE to $m$ GOEs.

categories: nucl-th cond-mat.mes-hall math-ph math.MP


title:
Anomalous Properties of Quadrupole Collective States in $^{136}$Te and
  beyond

abstract:
  The ground and low-lying states of neutron-rich exotic Te and Sn isotopes are
studied in terms of the nuclear shell model by the same Hamiltonian used for
the spherical-deformed shape phase transition of Ba isotopes, without any
adjustment. An anomalously small value is obtained for $B(E2;0^+_1\to 2^+_1)$
in $^{136}$Te, consistently with a recent experiment. The levels of $^{136}$Te
up to yrast $12^+$ are shown to be in agreement with observed ones. It is
pointed out that $^{136}$Te can be an exceptionally suitable case for studying
mixed-symmetry 1$^+$, 2$^+$ and 3$^+$ states, and predictions are made for
energies, M1 and E2 properties. Systematic trends of structure of heavier and
more exotic Sn and Te isotopes beyond $^{136}$Te are studied by Monte Carlo
Shell Model, presenting an unusual and very slow evolution of
collectivity/deformation.


title:
Versatility of field theory motivated nuclear effective Lagrangian
  approach

abstract:
  We analyze the results for infinite nuclear and neutron matter using the
standard relativistic mean field model and its recent effective field theory
motivated generalization. For the first time, we show quantitatively that the
inclusion in the effective theory of vector meson self-interactions and
scalar-vector cross-interactions explains naturally the recent experimental
observations of the softness of the nuclear equation of state, without losing
the advantages of the standard relativistic model for finite nuclei.


title:
A comprehensive treatment of electromagnetic interactions and the
  three-body spectator equations

abstract:
  We present a general derivation the three-body spectator (Gross) equations
and the corresponding electromagnetic currents. As in previous paper on
two-body systems, the wave equations and currents are derived from those for
Bethe-Salpeter equation with the help of algebraic method using a concise
matrix notation. The three-body interactions and currents introduced by the
transition to the spectator approach are isolated and the matrix elements of
the e.m. current are presented in detail for system of three indistinguishable
particles, namely for elastic scattering and for two and three body break-up.
The general expressions are reduced to the one-boson-exchange approximation to
make contact with previous work. The method is general in that it does not rely
on introduction of the electromagnetic interaction with the help of the minimal
replacement. It would therefore work also for other external fields.


title: Companion problems in quasispin and isospin

abstract:
  We note that the same mathematical results apply to problems involving
quasispin and isospin, but the problems per se are different. In the quasispin
case, one deals with a system of identical fermions (e.g. neutrons) and address
the problem of how many seniority conserving interactions there are. In the
isospin case, one deals with a system of both neutrons and protons and the
problem in question is the number of neutron-proton pairs with a given total
angular momentum. Other companion problems are also discussed.


title:
Reaction cross section described by a black sphere approximation of
  nuclei

abstract:
  We identify a length scale that simultaneously accounts for the observed
proton-nucleus reaction cross section and diffraction peak in the proton
elastic differential cross section. This scale is the nuclear radius, $a$,
deduced from proton elastic scattering data of incident energies higher than
$\sim800$ MeV, by assuming that the target nucleus is a ``black'' sphere. The
values of $a$ are determined so as to reproduce the angle of the first
diffraction maximum in the scattering data for stable nuclei. We find that the
absorption cross section, $\pi a^2$, agrees with the empirical total reaction
cross section for C, Sn, and Pb to within error bars. This agreement persists
in the case of the interaction cross section measured for a carbon target. We
also find that $\sqrt{3/5}a$ systematically deviates from the empirically
deduced values of the root-mean-square matter radius for nuclei having mass
less than about 50, while it almost completely agrees with the deduced values
for $A\gtrsim50$. This tendency suggests a significant change of the nuclear
matter distribution from a rectangular one for $A\lesssim50$, which is
consistent with the behavior of the empirical charge distribution.


title: Recent developments in light-front dynamics

abstract:
  Recent results on relativistic few body systems, obtained in the framework of
light-front dynamics, are briefly reviewed. The following subjects are
discussed: two scalar bosons with ladder and cross ladder kernel; two fermions
with OBE kernel; relativistic scattering (elastic and inelastic); three bosons
and fermions with zero-range interaction; many-body contributions.


title: Bound States of Heavy Flavor Hyperons

abstract:
  Several realistic phenomenological nucleon-nucleon interaction models are
employed to investigate the possibility of bound deuteron-like states of such
heavy flavor hyperons and nucleons, for which the interaction between the light
flavor quark components is expected to be the most significant interaction. The
results indicate that deuteron-like bound states are likely to form between
nucleons and the $\Xi_c^{'}$ and $\Xi_{cc}$ charm hyperons as well as between
$\Xi$ hyperons and double-charm hyperons. Bound states between two $\Sigma_c$
hyperons are also likely. In the case of beauty hyperons the corresponding
states are likely to be deeply bound.


title: Dileptons and Open Charm: Probes of Chiral Restoration

abstract:
  We summarize the status of electromagnetic probes of strongly interacting
matter produced in relativistic heavy-ion collisions at CERN-SPS with respect
to indications of chiral symmetry restoration. Explorative results for studying
the open charm dynamics at BNL-RHIC are presented.


title: On the formation of Hubble flow in Little Bangs

abstract:
  A dynamical appearance of scaling solutions in the relativistic hydrodynamics
applied to describe ultra-relativistic heavy-ion collisions is studied. We
consider the boost-invariant cylindrically symmetric systems and the effects of
the phase transition are taken into account by using a temperature dependent
sound velocity inferred from the lattice simulations of QCD. We find that the
transverse flow acquires the scaling form r/t within the short evolution times,
10 - 15 fm, only if the initial transverse flow originating from the
pre-equilibrium collective behavior is present at the initial stage of the
hydrodynamic evolution. The amount of such pre-equilibrium flow is correlated
with the initial pressure gradient; larger gradients require smaller initial
flow. The results of the numerical calculations support the phenomenological
parameterizations used in the Blast-Wave, Buda-Lund, and Cracow models of the
freeze-out process.


title: Effective Operator Treatment of the Lipkin Model

abstract:
  We analyze the Lipkin Model using effective operator techniques. We present
both analytical and numerical results for effective Hamiltonians. The accuracy
of the cluster approximation is investigated.


title: Puzzles at High $p_T$ at RHIC and Their Resolution

abstract:
  Several puzzles about the data at high $p_T$ in heavy-ion collisions are
listed. The resolution of them all is given in the framework of parton
recombination. More specifically, it is the recombination of the soft and
semi-hard shower partons that enhances the region $3<p_T<9$ GeV/c, and gives
rise to the large $p/\pi$ ratio in AuAu collisions. The Cronin effect can be
explained in terms of final-state interaction for both $\pi$ and $p$. The
structure of jets produced in AuAu is different from that in $pp$ collisions.
The suppression of $R_{CP}$ in forward production can also be understood by
extending the same hadronization scheme at $\eta=0$ to $\eta>0$ without the
introduction of any new physics.


abstract:
  Cluster structure in stable and unstable nuclei has been studied. We report
recent developments of theoretical studies on cluster aspect, which is
essential for structure study of light unstable nuclei. We discuss negative
parity bands in even-even Be and Ne isotopes and show the importance of cluster
aspect. Three-body cluster structure and cluster crystallization are also
introduced. It was found that the coexistence of cluster and mean-field aspect
brings a variety of structures to unstable nuclei.


title: The hadron-quark phase transition in neutron stars

abstract:
  We study the hadron-quark phase transition in the interior of neutron stars
(NS). For the hadronic sector, we use a microscopic equation of state (EOS)
involving nucleons and hyperons derived within the Brueckner-Hartree-Fock
approach. For the quark sector, we employ the MIT bag model, as well as the
Nambu--Jona-Lasinio (NJL) and the Color Dielectric (CD) models, and find that
the NS maximum masses lie in the interval between 1.5 and 1.8 solar masses.


title: Charm elliptic flow from quark coalescence dynamics

abstract:
  From covariant transport theory, a significant ~10% light quark elliptic flow
at RHIC implies an elliptic flow of similar magnitude for charm quarks, at
moderately large pT > 2.5 - 3 GeV. At lower transverse momenta, charm quark
elliptic flow reduces progressively, reminiscent of the mass ordering pattern
in ideal hydrodynamics. From the quark flows we predict the elliptic flow of D
mesons at RHIC via quark coalescence. The large parton opacities needed to
generate the light quark flow also lead to substantial ~40-50% secondary charm
production.


title:
Partial-Wave Analyses of all Proton-Proton and Neutron-Proton Data Below
  500 MeV

abstract:
  In 1993 the Nijmegen group published the results of energy-dependent
partial-wave analyses (PWAs) of the nucleon-nucleon (NN) scattering data for
laboratory kinetic energies below Tlab=350 MeV (PWA93). In this talk some
general aspects, but also the newest developments on the Nijmegen NN PWAs are
reported. We have almost finished a new energy-dependent PWA and will discuss
some typical aspects of this new PWA; where it differs from PWA93, but also
what future developments might be, or should be.


title: Is there a crystalline state of nuclear matter?

abstract:
  A possibility of the crystalline state of nuclear matter is discussed in a
medium--modified Skyrme model. The interaction energy per nucleon in nuclear
matter is evaluated by taking into account the medium influence on single
nucleon--skyrmion properties and the tensor part of the nucleon--nucleon
potential, and by using a variational method of Hartree--Fock type including
zero--point quantum fluctuations. It is shown that in this approach the ground
state of nuclear matter has no crystalline structure due to quantum
fluctuations as well as medium modifications of hadron properties.


title: Particle Number Fluctuations in the Microcanonical Ensemble

abstract:
  Particle number fluctuations are studied in the microcanonical ensemble. For
the Boltzmann statistics we deduce exact analytical formulae for the
microcanonical partition functions in the case of non-interacting massless
neutral particles and charged particles with zero net charge. The particle
number fluctuations are calculated and we find that in the microcanonical
ensemble they are suppressed in comparison to the fluctuations in the canonical
and grand canonical ensembles. This remains valid in the thermodynamic limit
too, so that the well-known equivalence of all statistical ensembles refers to
average quantities, but does not apply to fluctuations. In the thermodynamic
limit we are able to calculate the particle number fluctuations in the system
of massive bosons and fermions when the exact conservation laws of both the
energy and charge are taken into account.


title:
A theoretical description of energy spectra and two-neutron separation
  energies for neutron-rich zirconium isotopes

abstract:
  Very recently the atomic masses of neutron-rich Zr isotopes, from $^{96}$Zr
to $^{104}$Zr, have been measured with high precision. Using a schematic
Interacting Boson Model (IBM) Hamiltonian, the evolution from spherical to
deformed shapes along the chain of Zr isotopes, describing at the same time the
excitation energies as well as the two-neutron separation energies, can be
rather well reproduced. The interplay between phase transitions and
configuration mixing of intruder excitations in this mass region is succinctly
addressed.


title: Shape transition and oblate-prolate coexistence in N=Z fpg-shell nuclei

abstract:
  Nuclear shape transition and oblate-prolate coexistence in $N=Z$ nuclei are
investigated within the configuration space ($2p_{3/2}$, $1f_{5/2}$,
$2p_{1/2}$, and $1g_{9/2}$). We perform shell model calculations for $^{60}$Zn,
$^{64}$Ge, and $^{68}$Se and constrained Hartree-Fock (CHF) calculations for
$^{60}$Zn, $^{64}$Ge, $^{68}$Se, and $^{72}$Kr, employing an effective pairing
plus quadrupole residual interaction with monopole interactions. The shell
model calculations reproduce well the experimental energy levels of these
nuclei. From the analysis of potential energy surface in the CHF calculations,
we found shape transition from prolate to oblate deformation in these $N=Z$
nuclei and oblate-prolate coexistence at $^{68}$Se. The ground state of
$^{68}$Se has oblate shape, while the shape of $^{60}$Zn and $^{64}$Ge are
prolate. It is shown that the isovector matrix elements between $f_{5/2}$ and
$p_{1/2}$ orbits cause the oblate deformation for $^{68}$Se, and four-particle
four-hole ($4p-4h$) excitations are important for the oblate configuration.


title: Phase Diagram of the Proton-Neutron Interacting Boson Model

abstract:
  We study the phase diagram of the proton--neutron interacting boson model
(IBM--2) with special emphasis on the phase transitions leading to triaxial
phases. The existence of a new critical point between spherical and triaxial
shapes is reported.


title: Entrance channels and alpha decay half-lives of the heaviest elements

abstract:
  The barriers standing against the formation of superheavy elements and their
consecutive $\alpha$ decay have been determined in the quasimolecular shape
path within a Generalized Liquid Drop Model including the proximity effects
between nucleons in a neck, the mass and charge asymmetry, a precise nuclear
radius and the shell effects given by the Droplet Model. For moderately
asymmetric reactions double-hump potential barriers stand and fast fission of
compact shapes in the outer well is possible. Very asymmetric reactions lead to
one hump barriers which can be passed only with a high energy relatively to the
superheavy element energy. Then, only the emission of several neutrons or an
$\alpha$ particle can allow to reach an eventual ground state. For almost
symmetric heavy-ion reactions, there is no more external well and the inner
barrier is higher than the outer one.


title:
The non-Abelian feature of parton energy loss in energy dependence of
  jet quenching in high-energy heavy-ion collisions

abstract:
  One of the non-Abelian features of parton energy loss is the ratio $\Delta
E_g/\Delta E_q=9/4$ between gluon and quark jets. Since jet production rate is
dominated by quark jets at high $x_T=2p_T/\sqrt{s}$ and by gluon jets at low
$x_T$, high $p_T$ hadron suppression in high-energy heavy-ion collisions should
reflect such a non-Abelian feature. Within a leading order perturbative QCD
parton model that incorporates transverse expansion and Woods-Saxon nuclear
distribution, the energy dependence of large $p_T\sim 5-20$ GeV/$c$ hadron
suppression is found to be sensitive to the non-Abelian feasture of parton
energy loss and could be tested by data from low energy runs at RHIC or data
from LHC.


title:
Q-phonon description of low lying 1^- two-phonon states in spherical
  nuclei

abstract:
  The properties of 1^-_1 two-phonon states and the characteristics of E1
transition probabilities between low-lying collective states in spherical
nuclei are analysed within the Q-phonon approach to the description of
collective states. Several relations between observables are obtained.
Microscopic calculations of the E1 0^+_1 -> 1^-_1 transition matrix elements
are performed on the basis of the RPA. A satisfactory description of the
experimental data is obtained.


title: Three-Body Scattering at Intermediate Energies

abstract:
  The Faddeev equation for three-body scattering at arbitrary energies is
formulated in momentum space and directly solved in terms of momentum vectors
without employing a partial wave decomposition. In its simplest form the
Faddeev equation for identical bosons, which we are using, is a
three-dimensional integral equation in five variables, magnitudes of relative
momenta and angles. This equation is solved through Pade summation. Based on a
Malfliet-Tjon-type potential, the numerical feasibility and stability of the
algorithm for solving the Faddeev equation is demonstrated. Special attention
is given to the selection of independent variables and the treatment of
three-body break-up singularities with a spline based method. The elastic
differential cross section, semi-exclusive d(N,N') cross sections and total
cross sections of both elastic and breakup processes in the intermediate energy
range up to about 1 GeV are calculated and the convergence of the multiple
scattering series is investigated in every case. In general a truncation in the
first or second order in the two-body t-matrix is quite insufficient.


title: Cluster form factor calculation in the ab initio no-core shell model

abstract:
  We derive expressions for cluster overlap integrals or channel cluster form
factors for ab initio no-core shell model (NCSM) wave functions. These are used
to obtain the spectroscopic factors and can serve as a starting point for the
description of low-energy nuclear reactions. We consider the composite system
and the target nucleus to be described in the Slater determinant (SD) harmonic
oscillator (HO) basis while the projectile eigenstate to be expanded in the
Jacobi coordinate HO basis. This is the most practical case. The spurious
center of mass components present in the SD bases are removed exactly. The
calculated cluster overlap integrals are translationally invariant. As an
illustration, we present results of cluster form factor calculations for
<5He|4He+n>, <5He|3H+d>, <6Li|4He+d>, <6Be|3He+3He>, <7Li|4He+3H>, <7Li|6Li+n>,
<8Be|6Li+d>, <8Be|7Li+p>, <9Li|8Li+n> and <13C|12C+n>, with all the nuclei
described by multi-hbar Omega NCSM wave functions.


title: Nuclear pairing and Coriolis effects in proton emitters

abstract:
  We introduce a Hartree-Fock-Bogoliubov mean-field approach to treat the
problem of proton emission from a deformed nucleus. By substituting a rigid
rotor in a particle-rotor-model with a mean-field we obtain a better
description of experimental data in $^{141}$Ho. The approach also elucidates
the softening of kinematic coupling between particle and collective rotation,
the Coriolis attenuation problem.


title: Quantum number projection at finite temperature via thermofield dynamics

abstract:
  Applying the thermo field dynamics, we reformulate exact quantum number
projection in the finite-temperature Hartree-Fock-Bogoliubov theory. Explicit
formulae are derived for the simultaneous projection of particle number and
angular momentum, in parallel to the zero-temperature case. We also propose a
practical method for the variation-after-projection calculation, by
approximating entropy without conflict with the Peierls inequality. The quantum
number projection in the finite-temperature mean-field theory will be useful to
study effects of quantum fluctuations associated with the conservation laws on
thermal properties of nuclei.


title:
On the double and triple-humped fission barriers and half-lives of
  actinide elements

abstract:
  The deformation barriers standing in the quasi-molecular shape path have been
determined in the actinide region within a macroscopic-microscopic energy
derived from a generalized liquid drop model, the algebraic droplet model shell
corrections and analytic expressions for the pairing energies. Double and
triple-humped fission barriers appear. The second barrier corresponds to the
transition from one-body shapes to two touching ellipsoids. The third minimum
and third peak, when they exist, come from shell rearrangements in the deformed
fragment. The shape of the other almost magic one is close to the sphere. The
barrier heights agreewith the experimental results, the energy of the second
minimum being a little too high. The predicted half-lives follow the
experimental data trend.


title: Interaction of the $\Theta^+$ with the nuclear medium

abstract:
  We study the selfenergy of the $\Theta^+$ pentaquark in nuclei associated
with two types of interaction: the KN decay of the $\Theta^+$ and two meson
baryon decay channels of the $\Theta^+$. Whereas the potential related to the
first source is quite weak, the second kind of interaction produces a large and
attractive potential that could lead to the existence of $\Theta^+$ nuclear
bound states.


title: Nuclear effects on generalized parton distributions of 3He

abstract:
  The relevance of measuring Generalized Parton Distributions (GPDs) of nuclei
is stressed and the unique possibilities offered by nuclear few body systems is
emphasized. A realistic microscopic calculation of the unpolarized quark GPD
Hq3 of the 3He nucleus is reviewed. Nuclear effects are found to be larger than
in inclusive deep inelastic scattering, flavor dependent, increasing with the
momentum transfer and the asymmetry of the process. They also depend on the
choice of the realistic potential. Besides, it is found that nuclear GPDs
cannot be factorized into a Delta^2-dependent and a Delta^2-independent term,
as suggested in prescription proposed for finite nuclei.


title: Model wave functions and dynamic correlations in light-medium nuclei

abstract:
  The nuclei $^4$He, $^8$Be, $^{12}$C and $^{16}$O have been studied starting
from nucleon-nucleon interactions of $v_4$ type. The wave function is built as
the product of three terms, a Jastrow correlation factor, a linear correlation
factor and a model wave function. The correlation factors account for both the
short range repulsive and the spin and isospin dependence of the nuclear
potential. The model wave function is antisymmetric and has the values of the
angular momentum and parity of the state under description. For the model wave
function we have used two different schemes. The first one is based on a
Harmonic Oscillator shell model with and without deformation, and the second
one is based on the Margenau-Brink model of alpha clustering. Projection
operators of parity and total angular momentum are used. The performance of
these two models is studied and compared systematically. Wave functions for the
ground state and some members of its rotational band and some other bound
states of these nuclei have been obtained. Binding energies, root mean square
radius and the expectation value of the kinetic energy and the different
channels of the nuclear interactions and the one-- and two-- body densities are
reported. The two different model wave functions and the effects of the
different nucleon-nucleon correlations have been evaluated on those quantities.
All the results here presented have been obtained by using the Variational
Monte Carlo method.


title: Weak Decay of Hypernuclei

abstract:
  The focus of these Lectures is on the weak decay modes of hypernuclei, with
special attention to Lambda-hypernuclei. The subject involves many fields of
modern theoretical and experimental physics, from nuclear structure to the
fundamental constituents of matter and their interactions. The various weak
decay modes of Lambda-hypernuclei are described: the mesonic mode and the
non-mesonic ones. The latter are the dominant decay channels of medium--heavy
hypernuclei, where, on the contrary, the mesonic decay is disfavoured by Pauli
blocking effect on the outgoing nucleon. In particular, one can distinguish
between one-body and two-body induced decays. Theoretical models employed to
evaluate the (partial and total) decay widths of hypernuclei are illustrated,
and their results compared with existing experimental data. Open problems and
recent achievements are extensively discussed, in particular the determination
of the ratio Gamma_n/Gamma_p, possible tests of the Delta I=1/2 rule in
non-mesonic decays and the puzzling asymmetric non-mesonic decay of polarized
hypernuclei.


title:
The Short Range Mechanism of N-N interaction in the Extended Chiral
  SU(3) Quark Model

abstract:
  We give the comparisons between the chiral SU(3) quark model and the extended
chiral SU(3) quark model. The results show that the phase shifts of NN
scattering are very similar. However, the short range mechanisms of
nucleon-nucleon interaction are totally different. In the chiral SU(3) quark
model, the short range interaction is dominantly from OGE, and in the extended
chiral SU(3) quark model, it is dominantly from vector meson exchanges.


title: Compton Scattering and Generalized Polarizabilities

abstract:
  In recent years, real and virtual Compton scattering off the nucleon have
attracted considerable interest from both the experimental and theoretical
sides. Real Compton scattering gives access to the so-called electromagnetic
polarizabilities containing the structure information beyond the global
properties of the nucleon such as its charge, mass, and magnetic moment. These
polarizabilities have an intuitive interpretation in terms of induced dipole
moments and thus characterize the response of the constituents of the nucleon
to a soft external stimulus. The virtual Compton scattering reaction $e^-p\to
e^-p\gamma$ allows one to map out the {\em local} response to external fields
and can be described in terms of generalized electromagnetic polarizabilities.
A simple classical interpretation in terms of the induced electric and magnetic
polarization densities is proposed. We will discuss experimental results for
the polarizabilities of the proton and compare them with theoretical
predictions.


title: Chiral SU(3) dynamics and $\Lambda$-hyperons in the nuclear medium

abstract:
  We present a novel approach to the density dependent mean field and the
spin-orbit interaction of a $\Lambda$-hyperon in a nuclear many-body system,
based on flavor-SU(3) in-medium chiral perturbation theory. The leading
long-range $\Lambda N$-interaction arises from kaon exchange and from two-pion
exchange with a $\Sigma$-hyperon in the intermediate state. The empirical
$\Lambda$-nucleus potential depth of about $-28 $MeV is well reproduced with a
single cutoff scale, $\bar \Lambda = 0.7 $GeV, effectively representing all
short-distance (high-momentum) dynamics not resolved at scales characteristic
of the nuclear Fermi momentum. This value of $\bar\Lambda$ is remarkably
consistent with the one required to reproduce the empirical saturation point of
isospin-symmetric nuclear matter in the same framework. The smallness of the
$\Lambda$-nuclear spin-orbit interaction finds a natural (yet novel)
explanation in terms of an almost complete cancellation between short-range
contributions (properly rescaled from the known nucleonic spin-orbit coupling
strength) and long-range terms generated by iterated one-pion exchange with
intermediate $\Sigma$-hyperons. The small $\Sigma\Lambda$-mass difference
figures prominently in this context.


title:
Relativistic Mean-Field Models with Effective Hadron Masses and Coupling
  Constants, and rho^- Condensation

abstract:
  We study relativistic mean-field models with hadron masses and coupling
constants depending self-consistently on a scalar meson field. We demonstrate
that by the field redefinition some models can be equivalently transformed into
each other. Thereby the large variety of scaling functions for masses and
couplings can be reduced to a restricted set of functions with a constrained
dependence on a scalar field. We show how by choosing properly the latter
scaling functions one may stiffen or soften the equation of state at high
densities and simultaneously increase the threshold density for the direct Urca
process without any change of the description of nuclear matter close to the
saturation density. The stiffening of the equation of state might be motivated
by recent neutron star mass measurements, whereas the increase of the threshold
density for the direct Urca process is required by the analysis of neutron star
cooling data. We demonstrate that if a rho meson is included in a mean-field
model as a non-Abelian gauge boson, then there is a possibility for a charged
rho-meson condensation in dense nuclear matter. We show that such a novel phase
can be realized in neutron star interiors already for sufficiently low
densities, typically $\sim 3\div 4 n_0$, where $n_0$ is the nuclear saturation
density. In the framework of the relativistic mean field model the new phase
arises in a second-order phase transition. The appearance of a $\rho^-$
condensate significantly alters the proton fraction in a neutron star but
changes moderately the equation of state. The neutrino emissivity of the
processes involving a $\rho^-$ meson condensate is estimated.


title:
Configuration mixing in $^{188}$Pb : band structure and electromagnetic
  properties

abstract:
  In the present paper, we carry out a detailed analysis of the presence and
mixing of various families of collective bands in $^{188}$Pb. Making use of the
interacting boson model, we construct a particular intermediate basis that can
be associated with the unperturbed bands used in more phenomenological studies.
We use the E2 decay to construct a set of collective bands and discuss in
detail the B(E2)-values. We also perform an analysis of these theoretical
results (Q, B(E2)) to deduce an intrinsic quadrupole moment and the associated
quadrupole deformation parameter, using an axially deformed rotor model.


title: $D$-mesons and charmonium states in hot pion matter

abstract:
  We calculate the in-medium $D$ meson self-energies in a hot pion gas induced
by resonance interactions with pions. The appropriate resonances in the {\it
s},~ {\it p} and {\it d} waves of the $D$ meson-pion pair are represented by
low lying scalar, vector and tensor $D^*$ mesons. At temperatures around 200
MeV the D-meson mass drops by $30~ \rm {MeV}$ and the scattering width grows up
to $60~ \rm {MeV}$. Similar medium effects are found for the $D^*$ vector
mesons. This opens and/or enhances the decay and/or dissociation channels of
the charmonium states $\Psi^\prime$, $\chi_c$ and $J/\Psi$ to $D \bar D,~D^*
\bar D,~D \bar D^* ,~D^* \bar D^*$ pairs in pion matter.


title: Isospin Asymmetry in Nuclei and Neutron Stars

abstract:
  The roles of isospin asymmetry in nuclei and neutron stars are investigated
using a range of potential and field-theoretical models of nucleonic matter.
The parameters of these models are fixed by fitting the properties of
homogeneous bulk matter and closed-shell nuclei. We discuss and unravel the
causes of correlations among the neutron skin thickness in heavy nuclei, the
pressure of beta-equilibrated matter at a density of 0.1 fm$^{-3}$, the
derivative of the nuclear symmetry energy at the same density and the radii of
moderate mass neutron stars. Constraints on the symmetry properties of nuclear
matter from the binding energies of nuclei are examined. The extent to which
forthcoming neutron skin measurements will further delimit the symmetry
properties is investigated. The impact of symmetry energy constraints for the
mass and moment of inertia contained within neutron star crusts and the
threshold density for the nucleon direct Urca process, all of which are
potentially measurable, is explored. We also comment on the minimum neutron
star radius, assuming that only nucleonic matter exists within the star.


title: Cold Strongly Coupled Atoms Make a Near-perfect Liquid

abstract:
  Feshbach resonances of trapped ultracold alkali atoms allow to vary the
atomic scattering length a. At very large values of a the system enters an
universal strongly coupled regime in which its properties--the ground state
energy, pressure {\it etc.}--become independent of a. We discuss transport
properties of such systems. In particular, the universality arguments imply
that the shear viscosity of ultracold Fermi atoms at the Feschbach resonance is
proportional to the particle number density n, and the Plank constant \hbar
\eta=\hbar n \alpha_\eta, where \alpha_\eta is a universal constant. Using
Heisenberg uncertainty principle and Einstein's relation between diffusion and
viscosity we argue that the viscosity has the lower bound given by
\alpha_{\eta} \leq (6\pi)^{-1}. We relate the damping of low-frequency density
oscillations of ultracold optically trapped ^{6}Li atoms to viscosity and find
that the value of the coefficient \alpha_\eta is about 0.3. We also show that
such a small viscosity can not be explained by kinetic theory based on binary
scattering. We conclude that the system of ultracold atoms near the Feshbach
resonance is a near-ideal liquid.


title: Pentaquark baryon production in nuclear reactions

abstract:
  Using a hadronic model with empirical coupling constants and form factors, we
have evaluated the cross sections for the production of exotic pentaquark
$\Theta^+$ and/or $\Xi_5^+$ and $\Xi_5^{--}$ in reactions induced by photons,
nucleons, pions, and kaons on nucleon targets. We have also predicted the
$\Theta^+$ yield in relativistic heavy ion collisions using a kinetic model
that takes into account both $\Theta^+$ production from the coalescence of
quarks and antiquarks in the quark-gluon plasma and the effects due to
subsequent hadronic absorption and regeneration.


title:
SU(N) Wigner-Racah algebra for the matrix of second moments of embedded
  Gaussian unitary ensemble of random matrices

abstract:
  Recently Pluhar and Weidenmueller [Ann. Phys. (N.Y.) Vol 297, 344 (2002)]
showed that the eigenvectors of the matrix of second moments of embedded
Gaussian unitary ensemble of random matrices generated by k-body interactions
(EGUE(k)) for m fermions in N single particle states are SU(N) Wigner
coefficients and derived also an expression for the eigenvalues. Going beyond
this work, we will show that the eigenvalues of this matrix are square of a
SU(N) Racah coefficient and thus the matrix of second moments of EGUE(k) is
solved completely by SU(N) Wigner-Racah algebra.


title: Recent issues in hadron spectroscopy

abstract:
  A brief survey is presented of recently discovered hadrons, some of them
presumably demonstrating a new kind of internal structure. This includes :
spin-singlet quarkonium, mesons with unexpected mass or width, baryons with two
heavy quarks, and pentaquark candidates. Flavour configurations with a
combination of light and heavy quarks appear as particularly promising.


title: Hadronic aspects of exotic baryons

abstract:
  In this talk I look into three different topics, addressing first the
possibility that the $\Theta^+$ is a bound state of $K \pi N$, exploiting the
results of this study to find out the contribution of two meson and one baryon
components in the baryon antidecuplet and in the third place I present results
on a new resonant exotic baryonic state which appears as dynamically generated
by the Weinberg Tomozawa $\Delta K$ interaction.


title: Pentaquark $\Theta^+$ in nuclear matter and $\Theta^+$ hypernuclei

abstract:
  We study the properties of the $\Theta^+$ in nuclear matter and $\Theta^+$
hypernuclei within the quark mean-field (QMF) model, which has been
successfully used for the description of ordinary nuclei and $\Lambda$
hypernuclei. With the assumption that the non-strange mesons couple only to the
$u$ and $d$ quarks inside baryons, a sizable attractive potential of the
$\Theta^+$ in nuclear matter is achieved as a consequence of the cancellation
between the attractive scalar potential and the repulsive vector potential. We
investigate the $\Theta^+$ single-particle energies in light, medium, and heavy
nuclei. More bound states are obtained in $\Theta^+$ hypernuclei in comparison
with those in $\Lambda$ hypernuclei.


title:
Strength of the $\Sigma$ Single-Particle Potential in Nuclei From
  Semiclassical Distorted Wave Model Analysis of $(\pi^-,K^+)$ Inclusive
  Spectrum

abstract:
  Semiclassical distorted wave model is developed to describe $(\pi^-,K^+)$
inclusive spectra related to $\Sigma^-$-formation measured at KEK with $p_\pi
=1.2$ GeV/c. The shape and magnitude of the spectrum on $^{28}$Si target are
satisfactorily reproduced by a repulsive $\Sigma$-nucleus potential, the
strength of which is of the order of 30$\sim$50 MeV. This strength is not so
strong as more than 100 MeV suggested by the estimation presented in the report
of the experiment.


title: Parity Violation in Astrophysics

abstract:
  Core collapse supernovae are gigantic explosions of massive stars that
radiate 99% of their energy in neutrinos. This provides a unique opportunity
for large scale parity or charge conjugation violation. Parity violation in a
strong magnetic field could lead to an asymmetry in the neutrino radiation and
recoil of the newly formed neutron star. Charge conjugation violation in the
neutrino-nucleon interaction reduces the ratio of neutrons to protons in the
neutrino driven wind above the neutron star. This is a problem for r-process
nucleosynthesis in this wind. On earth, parity violation is an excellent probe
of neutrons because the weak charge of a neutron is much larger than that of a
proton. The Parity Radius Experiment (PREX) at Jefferson Laboratory aims to
precisely measure the neutron radius of $^{208}$Pb with parity violating
elastic electron scattering. This has many implications for astrophysics,
including the structure of neutron stars, and for atomic parity nonconservation
experiments.}


title:
Applicability of shape parameterizations for giant dipole resonance in
  warm and rapidly rotating nuclei

abstract:
  We investigate how well the shape parameterizations are applicable for
studying the giant dipole resonance (GDR) in nuclei, in the low temperature
and/or high spin regime. The shape fluctuations due to thermal effects in the
GDR observables are calculated using the actual free energies evaluated at
fixed spin and temperature. The results obtained are compared with Landau
theory calculations done by parameterizing the free energy. We exemplify that
the Landau theory could be inadequate where shell effects are dominating. This
discrepancy at low temperatures and high spins are well reflected in GDR
observables and hence insists on exact calculations in such cases.


title: Solving the inhomogeneous Bethe-Salpeter equation

abstract:
  We develop an advanced method of solving homogeneous and inhomogeneous
Bethe-Salpeter equations by using the expansion over the complete set of
4-dimensional spherical harmonics. We solve Bethe-Salpeter equations for bound
and scattering states of scalar and spinor particles for the case of one meson
exchange kernels. Phase shifts calculated for the scalar model are in agreement
with the previously published results. We discuss possible manifestations of
separability for one meson exchange interaction kernels.


title: Some Calculations for Cold Fusion Superheavy Elements

abstract:
  The Q value and optimal exciting energy of the hypothetical superheavy nuclei
in cold fusion reaction are calculated with relativistic mean field model and
semiemperical shell model mass equation(SSME) and the validity of the two
models is tested. The fusion barriers are also calculated with two different
models and reasonable results are obtained. The calculations can give useful
references for the experiments in the superheavy nuclei synthesized in cold
fusion reactions.


title: Hydrodynamical evolution near the QCD critical end point

abstract:
  Hydrodynamical calculations have been successful in describing global
observables in ultrarelativistic heavy ion collisions, which aim to observe the
production of the quark-gluon plasma. On the other hand, recently, a lot of
evidence that there exists a critical end point (CEP) in the QCD phase diagram
has been accumulating. Nevertheless, so far, no equation of state with the CEP
has been employed in hydrodynamical calculations. In this paper, we construct
the equation of state with the CEP on the basis of the universality hypothesis
and show that the CEP acts as an attractor of isentropic trajectories. We also
consider the time evolution in the case with the CEP and discuss how the CEP
affects the final state observables, such as the correlation length,
fluctuation, chemical freezeout, kinetic freezeout, and so on. Finally, we
argue that the anomalously low kinetic freezeout temperature at the BNL
Relativistic Heavy Ion Collider suggests the possibility of the existence of
the CEP.


title: Globally Polarized Quark-gluon Plasma in Non-central A+A Collisions

abstract:
  Produced partons have large local relative orbital angular momentum along the
direction opposite to the reaction plane in the early stage of non-central
heavy-ion collisions. Parton scattering is shown to polarize quarks along the
same direction due to spin-orbital coupling. Such global quark polarization
will lead to many observable consequences, such as left-right asymmetry of
hadron spectra, global transverse polarization of thermal photons, dileptons
and hadrons. Hadrons from the decay of polarized resonances will have azimuthal
asymmetry similar to the elliptic flow. Global hyperon polarization is
predicted within different hadronization scenarios and can be easily tested.


title: Two Quark Potentials

abstract:
  In this Chapter QCD interactions between a quark and an anti-quark are
discussed. In the heavy quark limit these potentials can be related to
quarkonia and $1/m$ corrections can be systematically determined. Excitations
of the ground state potential provide an entry point into the phenomenology of
quark-gluon hybrids. The short-distance behaviour of non-perturbative
potentials can serve as a test of resummation and convergence of perturbative
expansions. Torelons and potentials between non-fundamental colour charges
offer a window into the origin of the confinement mechanism and relate to
effective string descriptions of low energy aspects of QCD.


title:
Hydro-inspired parameterizations of freeze-out in relativistic heavy-ion
  collisions

abstract:
  Popular parameterizations of the freeze-out conditions in relativistic
heavy-ion collisions are discussed. Similarities and differences between the
blast-wave model and the single-freeze-out model, both used recently to
interpret the RHIC data, are outlined. A non-boost-invariant extension of the
single-freeze-out model is proposed and applied to describe the recent BRAHMS
data.


title:
Self-consistent Green's function calculation of 16O at small missing
  energies

abstract:
  Calculations of the one-hole spectral function of 16O for small missing
energies are reviewed.
  The self-consistent Green's function approach is employed together with the
Faddeev equations technique in order to study the coupling of both
particle-particle and particle-hole phonons to the single-particle motion. The
results indicate that the characteristics of hole fragmentation are related to
the low-lying states of 16O and an improvement of the description of this
spectrum, beyond the random phase approximation, is required to understand the
experimental strength distribution.
  A first calculation in this direction that accounts for two-phonon states is
discussed.


title:
Multi-deformed Configurations and Shape Coexistence for Superheavy
  Elements

abstract:
  We use the considered axial deformed relativistic mean field theory to
perform systematical calculations for Z=112 and 104 isotopic chains with force
parameters NL3, NL-SH and NL-Z2 sets. Three deformed chains (oblate, moderate
prolate and super-deformed chain) are found for Z=112 and 104 isotopic chains.
It is found that there is a chain of super-deformed nuclei which can increase
the stability of superheavy nuclei in the Z=112 isotopic chain. Shape
coexistence is found for Z=112, 104 isotopic chain and the position is defined.
For moderate prolate deformed chains of Z=112 and 104, there is shell closure
at N=184 for moderate prolate deformed chain. For oblate deformed chain of
Z=112, the shell closure appears around at N=176. For super-deformed chains of
Z=112 and 104, the position of shell closure have strong parameter dependence.
There is shell anomalism for oblate or superdeformed nuclei.


title: Hybrid and Conventional Baryons in the Flux-Tube and Quark Models

abstract:
  The status of conventional baryon flux-tubes and hybrid baryons is reviewed.
Recent surprises are that a model prediction indicates that hybrid baryons are
very weakly produced in glue-rich Psi decays, and an analysis of
electro-production data concludes that the Roper resonance is not a hybrid
baryon. The baryon decay flux-tube overlap has been calculated in the flux-tube
model, and is discussed here. The behavior of the overlap follows naive
expectations.


title: Hadron Correlations from Recombination and Fragmentation

abstract:
  We review the formalism of quark recombination applied to the hadronization
of a quark gluon plasma. Evidence in favor of the quark recombination model is
outlined. Recent work on parton correlations, leading to detectable
correlations between hadrons, is discussed. Hot spots from completely quenched
jets are a likely source of such correlations which appear to be jet-like. It
will be discussed how such a picture compares with measurement of associated
hadron yields at RHIC.


title: Neutrino-Nucleus Reactions and Muon Capture in 12C

abstract:
  The neutrino-nucleus cross section and the muon capture rate are discussed
within a simple formalism which facilitates the nuclear structure calculations.
The corresponding formulae only depend on four types of nuclear matrix
elements, which are currently used in the nuclear beta decay. We have also
considered the non-locality effects arising from the velocity-dependent terms
in the hadronic current. We show that for both observables in 12C the higher
order relativistic corrections are of the order of ~5 only, and therefore do
not play a significant role. As nuclear model framework we use the projected
QRPA (PQRPA) and show that the number projection plays a crucial role in
removing the degeneracy between the proton-neutron two quasiparticle states at
the level of the mean field. Comparison is done with both the experimental data
and the previous shell model calculations. Possible consequences of the present
study on the determination of the $\nu_\mu ->\nu_e$ neutrino oscillation
probability are briefly addressed.


title:
Systematic studies of binding energy dependence of neutron - proton
  momentum correlation function

abstract:
  Hanbury Brown-Twiss (HBT) results of the neutron-proton correlation function
have been systematically investigated for a series nuclear reactions with light
projectiles with help of Isospin-Dependent Quantum Molecular Dynamics model.
The relationship between the binding energy per nucleon of the projectiles and
the strength of the neutron-proton HBT at small relative momentum has been
obtained. Results show that neutron-proton HBT results are sensitive to the
binding energy per nucleon.


title: Neutrino oscillations: measuring $\theta_{13}$ including its sign

abstract:
  In neutrino phenomenology, terms in the oscillation probabilities linear in
$\sin \theta_{13}$ lead naturally to the question ``How can one measure
$\theta_{13}$ including its sign?'' Here we demonstrate analytically and with a
simulation of neutrino data that ${\mathcal P}_{e\mu}$ and ${\mathcal
{P}_{\mu\mu}$ at $L/E = 2\pi/\Delta_{21}$ exhibit significant linear dependence
on $\theta_{13}$ in the limit of vacuum oscillations. Measurements at this
particular value of $L/E$ can thus determine not only $\theta_{13}$ but also
its sign, if CP violation is small.


title:
Polarized secondary particles in unpolarized high energy hadron-hadron
  collisions?

abstract:
  In this short note I speculate on some consequences of the high energy
collision picture in which the orbital angular momentum of the colliding
hadrons can be converted into secondary particle angular spin momentum via some
spin-orbital interaction. In particular I discuss a possibility to observe a
non-zero polarization of secondary particles (e.g. hyperons) at midrapidity
($x_F=0$) and at low transverse momentum. I also speculate that such effects
could contribute to the produced particle directed and elliptic flow observed
in relativistic nuclear collisions.


title: 8Be Nuclear Data Evaluation

abstract:
  An R-matrix analysis of experimental nuclear data on the reactions
4He(alpha,alpha), 4He(alpha,p), 4He(alpha,d), 7Li(p,alpha), 7Li(p,p), 7Li(p,n),
7Be(n,p), 6Li(d,alpha), 6Li(d,p), 6Li(d,n) and 6Li(d,d), leading to the 8Be
intermediate state, has been completed in the last two years. About 4700 data
points from 69 experimental references are included. The excitation energy
above the 8Be ground state is 25-26 MeV for all reactions except
4He(alpha,alpha) and 7Be(n,p). The data for the reactions 4He(alpha,alpha) and
6Li(d,d) do not fit well, but the other reactions fit with a chi^2/(point) of
less than the overall value of 7.9. Most of the 19 resonances found in the
R-matrix analysis correspond to resonances formerly known from experiment.
Evaluated integrated 4He(alpha,p), 4He(alpha,d), 7Li(p,alpha), 7Li(p,n),
7Be(n,p), 6Li(d,alpha), 6Li(d,p) and 6Li(d,n) reaction cross-sections are
presented. Evaluated cross-section and angular dependence files in ENDF format
were prepared for the twelve reactions p 7Li, n 7Be, d 6Li -> alpha 4He, p 7Li,
n 7Be, d 6Li. Maxwellian averaged temperature-dependent cross-sections in NDI
format were prepared for the six reactions 7Li(p,alpha), 7Li(p,n), 7Be(n,p),
6Li(d,alpha), 6Li(d,p) and 6Li(d,n).


title: Two lectures on color superconductivity

abstract:
  The first lecture provides an introduction to the physics of color
superconductivity in cold dense quark matter. The main color superconducting
phases are briefly described and their properties are listed. The second
lecture covers recent developments in studies of color superconducting phases
in neutral and beta-equilibrated matter. The properties of gapless color
superconducting phases are discussed.

categories: nucl-th astro-ph cond-mat.supr-con hep-ph hep-th