title: Continuum Shell Model

abstract:
  The Continuum Shell Model is an old but recently revived method that
traverses the boundary between nuclear many-body structure and nuclear
reactions. The method is based on the non-Hermitian energy-dependent effective
Hamiltonian. The formalism, interpretation of solutions and practical
implementation of calculations are discussed in detail. The results of the
traditional shell model are fully reproduced for bound states; resonance
parameters and cross section calculations are presented for decaying states.
Particular attention is given to one- and two-nucleon reaction channels
including sequential and direct two-body decay modes. New calculations of
reaction cross sections and comparisons with experimental data for helium and
oxygen isotope chains are presented.


title: Isotropization by QCD Plasma Instabilities

abstract:
  Numerical solutions of the Wong-Yang-Mills equations with anisotropic
particle momentum distributions are presented. Their isotropization by
collective effects due to the classical Yang-Mills field is shown.


title:
Particle transfer and fusion cross-section for Super-heavy nuclei in
  dinuclear system

abstract:
  Within the dinuclear system (DNS) conception, instead of solving
Fokker-Planck Equation (FPE) analytically, the Master equation is solved
numerically to calculate the fusion probability of super-heavy nuclei, so that
the harmonic oscillator approximation to the potential energy of the DNS is
avoided. The relative motion concerning the energy, the angular momentum, and
the fragment deformation relaxations is explicitly treated to couple with the
diffusion process, so that the nucleon transition probabilities, which are
derived microscopically, are time-dependent. Comparing with the analytical
solution of FPE, our results preserve more dynamical effects. The calculated
evaporation residue cross sections for one-neutron emission channel of Pb-based
reactions are basically in agreement with the known experimental data within
one order of magnitude.


title: D-mesons: In-medium effects at FAIR

abstract:
  The $D$-meson spectral density at finite temperature is obtained within a
self-consistent coupled-channel approach. For the bare meson-baryon
interaction, a separable potential is taken, whose parameters are fixed by the
position and width of the $\Lambda_c (2593)$ resonance. The quasiparticle peak
stays close to the free $D$-meson mass, indicating a small change in the
effective mass for finite density and temperature. Furthermore, the spectral
density develops a considerable width due to the coupled-channel structure. Our
results indicate that the medium modifications for the $D$-mesons in
nucleus-nucleus collisions at FAIR (GSI) will be dominantly on the width and
not, as previously expected, on the mass.


title:
On strangeness production in the reactions pp -> p Lambda^0 K^+ and pn
  -> n Lambda^0 K^+ near threshold

abstract:
  The cross sections for the reactions pp -> p Lambda^0K^+ and pn
  -> n Lambda^0K^+ are calculated near threshold of the final states. The
theoretical ratio of the cross sections R = sigma(pn -> n Lambda^0K^+)/
sigma(pp ->p\Lambda^0K^+) = 3 shows the enhancement of the pn interaction with
respect to the pp interaction near threshold of the strangeness production N
Lambda^0K^+. Such an enhancement is caused by the contribution of the np
interaction in the isospin-singlet state, which is stronger than the $pn$
interaction in the isospin-triplet state. For the confirmation of this result
we calculate the cross sections for the reactions pp -> pp pi^0, pi^0 p ->
Lambda^0 K^+ and pi^-p -> Lambda^0 K^0 near threshold of the final states. The
theoretical cross sections agree well with the experimental data.


title:
Dibaryons as carriers of strong internucleon interactions and a basis
  for nuclear physics based on QCD

abstract:
  New concept of intermediate- and short-range nuclear force proposed by the
authors a few years ago is discussed briefly. The general concept is based on
an assumption on generation of the dressed dibaryon in intermediate state in
$NN$ interaction. This new mechanism has been shown to lead not only to
numerous new predictions in hadronic physics but also should be responsible for
a large portion of nuclear binding energy and properties of nuclear
wavefunctions at high momenta.


title: Auxiliary Field Meson Model at Finite Temperature and Density

abstract:
  Starting from many quark interactions, we construct a nonlinear sigma-omega
model at finite temperature and density. The mesons are introduced as auxiliary
fields. Effective quark-meson couplings are strongly related to effective meson
masses, since they are derived simultaneously from the original many quark
interactions. In this model, even if the effective omega-meson mass decreases
due to the partial chiral restoration, the equation of state (EOS) of nuclear
matter can become soft.


title: Entropy in the Thermal Model

abstract:
  A brief review of the Hadron Gas model with reference to high energy heavy
ion collisions is presented. The entropy dependence on temperature and baryonic
chemical potential is numerically calculated, together with the entropy
distribution between baryons and mesons. The theoretical entropy for a QGP with
equivalent parameters is also calculated. It is shown that at low temperatures
the dominant entropy contribution comes from baryons, while at high energies
the dominant contribution comes from mesons. The turnover from baryon to meson
domination occurs at T approx 140 MeV, which corresponds to an energy domain of
the AGS at Brookhaven National Laboratory.


title:
High-spin intruder states in the fp shell nuclei and isoscalar
  proton-neutron correlations

abstract:
  We perform a systematic shell-model and mean-field study of fully-aligned,
high-spin f_{7/2}^{n} seniority isomers and d_{3/2}^{-1} f_{7/2}^{n+1} intruder
states in the A~44 nuclei from the lower-fp shell. The shell-model calculations
are performed in the full sdfp configuration space allowing 1p-1h cross-shell
excitations. The self-consistent mean-field calculations are based on the
Hartree-Fock approach with the Skyrme energy density functional that reproduces
empirical Landau parameters. While there is a nice agreement between
experimental and theoretical relative energies of fully-aligned states in N>Z
nuclei, this is no longer the case for the N=Z systems. The remaining deviation
from the data is attributed to the isoscalar proton-neutron correlations. It is
also demonstrated that the Coulomb corrections at high spins noticeably depend
on the choice of the energy density functional.


title:
Beyond the Quasi-Particle picture in Nuclear Matter calculations using
  Green's function techniques

abstract:
  Widths of low-lying states in nuclei are of the order of 30 MeV. These large
widths are a consequence of the strong interactions leading to a strongly
correlated many body system at the typical densities of nuclear matter.
Nevertheless "traditional" Brueckner calculations treat these states as
quasiparticles i.e. with spectral functions of zero widths. The width is
related to the imaginary part of the selfenergy and is included
selfconsistently in an extension of the Brueckner theory using T-matrix and
Green's function techniques. A more general formulation applicable also to
non-equilibrium systems is contained in the Kadanoff-Baym (KB) equations while
still maintaining the basic many-body techniques of Bruecknet theory. In the
present work the two-time KB-equations are time-stepped along the imaginary
time-axis to calculate the binding energy of nuclear matter as a function of
density, including the spectral widths self-consistently. These zero
temperature calculations are compared with quasi-particle calculations. The
inclusion of the self-consistent widths are found to add several MeV to the
binding. The spectral widths are due to the long-ranged correlations.
Short-ranged correlations decrease rather than increase the binding. The metod
is easily extended to non-zero temperatures where the importance of the widths
are expected to increase.


title: phi production at RHIC: characterization of co-existence phase

abstract:
  We extract the effective degrees of freedom that characterize the co-existing
phase of quark gluon plasma and hadrons. Experimental data on phi at
mid-rapidity is used to set a lower bound to the critical temperature of quark
hadron phase transition. The production and evolution of strangeness have been
studied by using Boltzmann equation. The results have been contrasted with the
experimental data obtained by STAR collaboration at RHIC for Au + Au collisions
at sqrt{s_{NN}}=200 GeV. Our study reveals that the phi mesons freeze out at a
temperature ~ 160 MeV, a value close to the transition temperature for
quark-hadron phase transition.


title:
Semiclassical treatment of fusion processes in collisions of weakly
  bound nuclei

abstract:
  We describe a semiclassical treatment of nuclear fusion reactions involving
weakly bound nuclei. In this treatment, the complete fusion probabilities are
approximated by products of two factors: a tunneling probability and the
probability that the system is in its ground state at the strong absorption
radius. We investigate the validity of the method in a schematic two-channel
application, where the channels in the continuum are represented by a single
resonant state. Comparisons with full coupled-channels calculations are
performed. The agreement between semiclassical and quantal calculations isquite
good, suggesting that the procedure may be extended to more sophisticated
discretizations of the continuum.


title:
Nuclear Structure Calculations with Low-Momentum Potentials in a Model
  Space Truncation Approach

abstract:
  We have calculated the ground-state energy of the doubly magic nuclei 4He,
16O and 40Ca within the framework of the Goldstone expansion starting from
various modern nucleon-nucleon potentials. The short-range repulsion of these
potentials has been renormalized by constructing a low-momentum potential
V-low-k. We have studied the connection between the cutoff momemtum Lambda and
the size of the harmonic oscillator space employed in the calculations. We have
found a fast convergence of the results with a limited number of oscillator
quanta.


title: 3D Jet Tomography of the Twisted Color Glass Condensate

abstract:
  Jet Tomography is proposed as a new test of Color Glass Condensate (CGC)
initial conditions in non-central $A+A$ collisions. The $k_{T}$ factorized CGC
formalism is used to calculate the rapidity twist in the reaction plane of both
the bulk low $p_T< 2$ GeV matter as well as the rare high $p_T> 6$ GeV partons.
Unlike conventional perturbative QCD, the initial high $p_{T}$ CGC gluons are
shown to be twisted even further away from the beam axis than the the low $p_T$
bulk at high rapidities $|\eta|>2$. Differential directed flow
$v_{1}(p_{T}>6,|\eta|>2)$ is proposed to test this novel high $p_T$ rapidity
twist predicted by the CGC model.


title: Electroweak processes of the deuteron in effective field theory

abstract:
  We review our recent calculations of electroweak processes involving the
deuteron, based on pionless effective field theory with dibaryon fields. These
calculations are concerned with neutron-neutron fusion and np -> d gamma at BBN
energies.


title: Local demands on sterile neutrinos

abstract:
  In a model independent manner, we explore the local implications of a single
neutrino oscillation measurement which cannot be reconciled within a
three-neutrino theory. We examine this inconsistency for a single region of
baseline to neutrino energy $L/E$. Assuming that sterile neutrinos account for
the anomaly, we find that the {\it local} demands of this datum can require the
addition to the theory of one to three sterile neutrinos. We examine the
constraints which can be used to determine when more than one neutrino would be
required. The results apply only to a given region of $L/E$. The question of
the adequacy of the sterile neutrinos to satisfy a global analysis is not
addressed here. Finally, using the results of a 3+2 analysis, we indicate
values for unknown mixing matrix elements which would require two sterile
neutrinos due to local demands only.


title:
A statistical model analysis of yields and fluctuations in 200 GeV Au-Au
  collisions

abstract:
  We show that the simultaneous measurement of yields and fluctuations is
capable of falsifying and constraining the statistical hadronization model. We
show how such a measurement can test for chemical non-equilibrium, and
distinguish between a high temperature chemically equilibrated freeze-out from
a supercooled freeze-out with an over-saturated phase space. We perform a fit,
and show that both yields and fluctuations measured at RHIC 200 GeV can be
accounted for within the second scenario, with both the light and strange quark
phase space saturated significantly above detailed balance. We point to the
simultaneous fit of the $K/\pi$ fluctuation and the $K^*/K^-$ ratio as evidence
that the effect of hadronic re-interactions after freeze-out is small.


title:
Role of low-$l$ component in deformed wave functions near the continuum
  threshold

abstract:
  The structure of deformed single-particle wave functions in the vicinity of
zero energy limit is studied using a schematic model with a quadrupole deformed
finite square-well potential. For this purpose, we expand the single-particle
wave functions in multipoles and seek for the bound state and the Gamow
resonance solutions. We find that, for the $K^{\pi}=0^{+}$ states, where $K$ is
the $z$-component of the orbital angular momentum, the probability of each
multipole components in the deformed wave function is connected between the
negative energy and the positive energy regions asymptotically, although it has
a discontinuity around the threshold. This implies that the $K^{\pi}=0^{+}$
resonant level exists physically unless the $l=0$ component is inherently large
when extrapolated to the well bound region. The dependence of the multipole
components on deformation is also discussed.


title:
Applications of Skyrme energy-density functional to fusion reactions
  spanning the fusion barriers

abstract:
  The Skyrme energy density functional has been applied to the study of
heavy-ion fusion reactions. The barriers for fusion reactions are calculated by
the Skyrme energy density functional with proton and neutron density
distributions determined by using restricted density variational (RDV) method
within the same energy density functional together with semi-classical approach
known as the extended semi-classical Thomas-Fermi method. Based on the fusion
barrier obtained, we propose a parametrization of the empirical barrier
distribution to take into account the multi-dimensional character of real
barrier and then apply it to calculate the fusion excitation functions in terms
of barrier penetration concept. A large number of measured fusion excitation
functions spanning the fusion barriers can be reproduced well. The competition
between suppression and enhancement effects on sub-barrier fusion caused by
neutron-shell-closure and excess neutron effects is studied.


title: Probing the equation of state with pions

abstract:
  The influence of the isospin-independent, isospin- and momentum-dependent
equation of state (EoS), as well as the Coulomb interaction on the pion
production in intermediate energy heavy ion collisions (HICs) is studied for
both isospin-symmetric and neutron-rich systems. The Coulomb interaction plays
an important role in the reaction dynamics, and strongly influences the
rapidity and transverse momentum distributions of charged pions. It even leads
to the $\pi^-/\pi^+$ ratio deviating slightly from unity for isospin-{\it
symmetric} systems. The Coulomb interaction between mesons and baryons is also
crucial for reproducing the proper pion flow since it changes the behavior of
the directed and the elliptic flow components of pions visibly.
  The EoS can be better investigated in neutron-rich system if {\it multiple}
probes are measured simultaneously. For example, the rapidity and the
transverse momentum distributions of the charged pions, the $\pi^-/\pi^+$
ratio, the various pion flow components, as well as the {\it difference} of
$\pi^+$-$\pi^-$ flows. A new sensitive observable is proposed to probe the
symmetry potential energy at high densities, namely the transverse momentum
distribution of the elliptic flow difference [$\Delta v_2^{\pi^+ -
\pi^-}(p_t^{\rm c.m.})$].


title:
Relation between widths of proton resonances and neutron asymptotic
  normalization coefficients in mirror states of light nuclei in a microscopic
  cluster model

abstract:
  It has been suggested recently ({\it Phys. Rev. Lett.} 91, 232501 (2003))
that the widths of narrow proton resonances are related to neutron Asymptotic
Normalization Coefficients (ANCs) of their bound mirror analogs because of
charge symmetry of nucleon-nucleon interactions.
  This relation is approximated by a simple analytical formula which involves
proton resonance energies, neutron separation energies, charges of residual
nuclei and the range of their strong interaction with the last nucleon. In the
present paper, we perform microscopic-cluster model calculations for the ratio
of proton widths to neutron ANCs squared in mirror states for several light
nuclei. We compare them to predictions of the analytical formula and to
estimates made within a single-particle potential model. A knowledge of this
ratio can be used to predict unknown proton widths for very narrow low-lying
resonances in the neutron-deficient region of the $sd$- and $pf$-shells, which
is important for understanding the nucleosynthesis in the $rp$-process.


title: 3He structure and generalized parton distribution

abstract:
  Nuclear Generalized Parton Distributions (GPDs), a unique tool to access
several crucial features of nuclear structure, could be measured in the
coherent channel of hard exclusive processes, such as deep electroproduction of
photons and mesons off nuclear targets. Here, a realistic microscopic
calculation of the unpolarized quark GPD H_q^3 of the ^3He nucleus is
described. In Impulse Approximation, H_q^3 is shown to be given by a
convolution between the GPD of the internal nucleon and the non-diagonal
spectral function, describing properly Fermi motion and binding effects. The
obtained formula has the correct limits. Nuclear effects, evaluated by a modern
realistic potential, are found to be larger than in the forward case. In
particular, they increase with increasing the momentum transfer and the
asymmetry of the process. Besides, it is found that the nuclear GPD cannot be
factorized into a \Delta^2-dependent and a \Delta^2-independent term, as
suggested in prescriptions proposed for finite nuclei. The dependence of the
obtained GPDs on different realistic potentials used in the calculation shows
that these quantities are sensitive to the details of nuclear structure at
short distances.


title: Potential energy surfaces for cluster emitting nuclei

abstract:
  Potential energy surfaces are calculated by using the most advanced
asymmetric two-center shell model allowing to obtain shell and pairing
corrections which are added to the Yukawa-plus-exponential model deformation
energy. Shell effects are of crucial importance for experimental observation of
spontaneous disintegration by heavy ion emission. Results for 222Ra, 232U,
236Pu and 242Cm illustrate the main ideas and show for the first time for a
cluster emitter a potential barrier obtained by using the
macroscopic-microscopic method.


title:
Short timescale behavior of colliding heavy nuclei at intermediate
  energies

abstract:
  An Antisymmetrized Molecular Dynamics model is used to explore the collision
of $^{114}$Cd projectiles with $^{92}$Mo target nuclei at E/A=50 MeV over a
broad range in impact parameter. The atomic number (Z), velocity, and emission
pattern of the reaction products are examined as a function of the impact
parameter and the cluster recognition time. The non-central collisions are
found to be essentially binary in character resulting in the formation of an
excited projectile-like fragment (PLF$^*$) and target-like fragment (TLF$^*$).
The decay of these fragments occurs on a short timescale, 100$\le$t$\le$300
fm/c. The average excitation energy deduced for the PLF$^*$ and TLF$^*$
`saturates for mid-central collisions, 3.5$\le$b$\le$6 fm, with its magnitude
depending on the cluster recognition time. For short cluster recognition times
(t=150 fm/c), an average excitation energy as high as $\approx$6 MeV is
predicted. Short timescale emission leads to a loss of initial correlations and
results in features such as an anisotropic emission pattern of both IMFs and
alpha particles emitted from the PLF$^*$ and TLF$^*$ in peripheral collisions.


title:
One and two proton separation energies from nuclear mass systematics
  using neural networks

abstract:
  We deal with the systematics of one and two proton separation energies as
predicted by our latest global model for the masses of nuclides developed with
the use of neural networks. Among others, such systematics is useful as input
to the astrophysical rp-process and to the one and two proton radioactive
studies. Our results are compared with the experimental separation energies
referred to in the 2003 Atomic Mass Evaluation and with those evaluated from
theoretical models for the masses of nuclides, like the FRDM of Möller et
al. and the HFB2 of Pearson et al. We focus in particular on the proton
separation energies for nuclides that are involved in the rp-process
(29<=Z<=40) but they have not yet been studied experimentally.


title:
Precise numerical results for limit cycles in the quantum three-body
  problem

abstract:
  The study of the three-body problem with short-range attractive two-body
forces has a rich history going back to the 1930's. Recent applications of
effective field theory methods to atomic and nuclear physics have produced a
much improved understanding of this problem, and we elucidate some of the
issues using renormalization group ideas applied to precise nonperturbative
calculations. These calculations provide 11-12 digits of precision for the
binding energies in the infinite cutoff limit. The method starts with this
limit as an approximation to an effective theory and allows cutoff dependence
to be systematically computed as an expansion in powers of inverse cutoffs and
logarithms of the cutoff. Renormalization of three-body bound states requires a
short range three-body interaction, with a coupling that is governed by a
precisely mapped limit cycle of the renormalization group. Additional
three-body irrelevant interactions must be determined to control subleading
dependence on the cutoff and this control is essential for an effective field
theory since the continuum limit is not likely to match physical systems ({\it
e.g.}, few-nucleon bound and scattering states at low energy). Leading order
calculations precise to 11-12 digits allow clear identification of subleading
corrections, but these corrections have not been computed.


title: Constraining freeze-out with yields and fluctuations

abstract:
  We show that the simultaneous measurement of yields and fluctuations in heavy
ion collisions is capable of falsifying and constraining the statistical
hadronization model. We show how such a measurement can test for chemical
non-equilibrium, and distinguish between a high temperature chemically
equilibrated freeze-out from a supercooled freeze-out with an over-saturated
phase space. We further explain how this measurement can be used to obtain a
model-independent estimate of the effect of post-freezeout hadronic
interactions.


title:
Unintegrated parton distributions and pion production in $pp$ collisions
  at SPS and RHIC energies

abstract:
  Inclusive cross sections for pion production in $pp$ collisions are
calculated for the first time fully based on unintegrated gluon, quark and
antiquark distributions (uPDF). We use recently developed Kwieci\'nski uPDF's
and different phenomenological fragmentation functions (FF) from the
literature. In addition to the $gg \to g$ diagram we include also $g q \to q$
and $q g \to q$ diagrams for inclusive parton production. The cross section for
pions is obtained then by convoluting the inclusive parton distributions and
FFs. Applications for SPS and RHIC are shown.


title: Shape mixing in the A 70 region

abstract:
  We investigate the mixing of different shapes in the A~70 region using the
adiabatic self-consistent collective method in a rotating nuclei. The
calculation is done for 68^Se and 72-78^Kr which are known to show
oblate-prolate shape coexistence at low angular momentum. A
pairing-plus-quadrupole Hamiltonian, which is known to reproduce reproduce the
structure nuclei in this mass region, is used. We calculate the collective path
between the oblate and prolate minima and discuss how the collective behaviour
of the system changes with increasing angular momentum.


title:
Resolutions of Several Puzzles at Intermediate $p_T$ and Recent
  Developments in Correlation

abstract:
  Some of the puzzles on hadron production at intermediate $p_T$ found at RHIC
are explained as natural consequences of parton recombination. In that
framework for hadronization the correlation among hadrons produced in jets can
be calculated. Some new results on both near-side and away-side jet structures
are presented.


title: Elliptic Flow Analysis at RHIC: Fluctuations vs. Non-Flow Effects

abstract:
  The cumulant method is applied to study elliptic flow ($v_2$) in Au+Au
collisions at $\sqrt{s}=200$AGeV, with the UrQMD model. In this approach, the
true event plane is known and both the non-flow effects and event-by-event
spatial ($\epsilon$) and $v_2$ fluctuations exist. Qualitatively, the hierarchy
of $v_2$'s from two, four and six-particle cumulants is consistent with the
STAR data, however, the magnitude of $v_2$ in the UrQMD model is only 60% of
the data. We find that the four and six-particle cumulants are good measures of
the real elliptic flow over a wide range of centralities except for the most
central and very peripheral events. There the cumulant method is affected by
the $v_2$ fluctuations. In mid-central collisions, the four and six-particle
cumulants are shown to give a good estimation of the true differential $v_2$,
especially at large transverse momentum, where the two-particle cumulant method
is heavily affected by the non-flow effects.


title: Hadron structure on the back of an envelope

abstract:
  In order to remove a little of the mysticism surrounding the issue of
strangeness in the nucleon, we present simple, physically transparent estimates
of both the strange magnetic moment and charge radius of the proton. Although
simple, the estimates are in quite good agreement with sophisticated
calculations using the latest input from lattice QCD. We further explore the
possible size of systematic uncertainties associated with charge symmetry
violation (CSV) in the recent precise determination of the strange magnetic
moment of the proton. We find that CSV acts to increase the error estimate by
0.003 \mu_N such that G_M^s = -0.046 +/- 0.022 \mu_N.


title:
Extended Optical Model Analyses of Elastic Scattering, Direct Reaction,
  and Fusion Cross Sections for the 9Be + 208Pb System at Near-Coulomb-Barrier
  Energies

abstract:
  Based on the extended optical model approach in which the polarization
potential is decomposed into direct reaction (DR) and fusion parts,
simultaneous $\chi^{2}$ analyses are performed for elastic scattering, DR, and
fusion cross section data for the $^{9}$Be+$^{208}$Pb system at
near-Coulomb-barrier energies. Similar $\chi^{2}$ analyses are also performed
by only taking into account the elastic scattering and fusion data as was
previously done by the present authors, and the results are compared with those
of the full analysis including the DR cross section data as well. We find that
the analyses using only elastic scattering and fusion data can produce very
consistent and reliable predictions of cross sections particularly when the DR
cross section data are not complete. Discussions are also given on the results
obtained from similar analyses made earlier for the $^{9}$Be+$^{209}$Bi system.


title: Number of states for nucleons in a single-$j$ shell

abstract:
  In this paper we obtain number of states with a given spin $I$ and a given
isospin $T$ for systems with three and four nucleons in a single-$j$ orbit, by
using sum rules of six-$j$ and nine-$j$ symbols obtained in earlier works.


title: Semi-central In-In collisions and Brown-Rho scaling

abstract:
  In connection with the claim made at the Quark Matter 2005 Conference that
the Brown-Rho scaling is ruled out by NA60 data we consider dimuon production
from semi-central In+In collisions in a full dynamical model. It is shown that
if only a modification of the density-dependent $\rho$-mass is allowed, the
maximum of dimuon invariant mass spectra is only slightly below experimental
one. The additional inclusion of the temperature-dependent modification factor
shifts the spectrum maximum toward lower invariant masses making calculation
results incompatible with data. A further study is needed to disentangle the BR
dropping $\rho$ mass scaling and strong broadening.


title:
A consistent quasiparticle picture of Quark-Gluon plasma and the
  velocity of sound

abstract:
  A thermodynamically consistent density dependent quark mass model has been
used to study the velocity of sound in a hot quark-gluon plasma. The results
are compared with the recent lattice data.


title:
Centrality dependence of global variables in relativistic heavy ion
  collisions: Final $p_{T}$ data analysis in the framework of a statistical
  model

abstract:
  The global variables like the transverse energy at midrapidity, the charged
particle multiplicity at midrapidity and the total multiplicity of charged
particles are evaluated in the single-freeze-out statistical model for
different centrality bins at RHIC at $\sqrt{s_{NN}}=130$ and 200 GeV. Full
description of decays of hadron resonances is applied in these estimations. The
geometric parameters of the model are obtained from the fit to the final data
on the $p_{T}$ spectra. The predicted values of the global variables agree
qualitatively well with the experimental data. The centrality independence of
the total number of charged particles per participant pair has been also
reproduced.


title: $\Lambda(1520)$ and $\Sigma(1385)$ in the nuclear medium

abstract:
  Recent studies of the $\Lambda(1520)$ resonance within chiral unitary theory
with coupled channels find the resonance as a dynamically generated state from
the interaction of the decuplet of baryons and the octet of mesons, essentially
a quasibound state of $\pi \Sigma^*(1385)$ in this case, although the coupling
of the $\Lambda(1520)$ to the $\bar{K}N$ and $\pi \Sigma$ makes this picture
only approximate. The $\pi \Sigma^*(1385)$ decay channel of the $\Lambda(1520)$
is forbidden in free space for the nominal mass of the $\Sigma^*(1385)$, but
the coupling of the $\pi$ to $ph$ components in the nuclear medium opens new
decay channels of the $\Lambda(1520)$ in the nucleus and produces a much larger
width. Together with medium modifications of the $\bar{K}N$ and $\pi \Sigma$
decay channels, the final width of the $\Lambda(1520)$ at nuclear matter
density is more than five times bigger than the free one. We perform the
calculations by dressing simultaneously the $\Lambda(1520)$ and the
$\Sigma^*(1385)$ resonances, finding moderate changes in the mass but
substantial ones in the width of both resonances.


title:
A q-deformed NJL model at finite temperature: chiral symmetry
  restoration and pion properties

abstract:
  We review the implementation of a q-deformed fermionic algebra in the
Nambu--Jona-Lasinio model (NJL). The gap equations obtained from a deformed
condensate as well as from the deformation of the NJL Hamiltonian are
discussed. The effect of both temperature and deformation in the chiral
symmetry restoration process as well as in the pion properties is studied.


title:
Parity violation in $pp$ scattering and vector-meson weak-coupling
  constants

abstract:
  We calculate the parity-nonconserving longitudinal asymmetry in the elastic
$\vec{p} p$ scattering at the energies where experimental data are available.
In addition to the standard one-meson exchange weak potential, the variation of
the strong-coupling constants and the non-standard effects such as form factors
and $2 \pi$-exchange description of the $\rho$-exchange potential are taken
into account. With the extra effects, we investigate the compatibility of the
experimental data and the presently-known range of the vector-meson
weak-coupling constants.


title: Critical End Point and Its Consequences

abstract:
  Recently a lot of evidence that there exists a critical end point (CEP) in
the QCD phase diagram has been accumulating. However, so far, no reliable
equation of state with the CEP has been employed in hydrodynamical
calculations. In this article, we construct the equations 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.


title: Hints of incomplete thermalization in RHIC data

abstract:
  The large elliptic flow observed in Au-Au collisions at RHIC is often put
forward as a compelling evidence for the formation of a strongly-interacting
quark-gluon plasma. The main argument is that the measured elliptic flow is as
large as the value given by fluid-dynamics models that assume complete
thermalization. It is argued that this claim may not be justified, since a
detailed examination of experimental data rather suggests that the system
created is not fully equilibrated at the time when anisotropic flow develops.


title: Direct Urca neutrino rate in colour superconducting quark matter

abstract:
  If deconfined quark matter exists inside compact stars, the primary cooling
mechanism is neutrino radiation via the direct Urca processes d->u+e+antinu_e
and u+e->d+nu_e. Below a critical temperature, T_c, quark matter forms a colour
superconductor, one possible manifestation of which is a condensate of <ud>
quark Cooper pairs in an electric-charge neutralising background of electrons.
We compute the neutrino emission rate from such a phase, including charged
pair-breaking and recombination effects, and find that on a material
temperature domain below T_c the pairing-induced suppression of the neutrino
emission rate is not uniformly exponential. If gapless modes are present in the
condensed phase, the emissivity at low temperatures is moderately enhanced
above that of completely unpaired matter. The importance of charged current
pair-breaking processes for neutrino emission both in the fully gapped and
partially gapped regimes is emphasised.


title:
Effective Field Theory of Nucleon-Nucleon Scattering on Large Discrete
  Lattices

abstract:
  Nuclear effective field theory is applied to the effective range expansion of
S-wave nucleon-nucleon scattering on a discrete lattice. Lattice regularization
is demonstrated to yield the effective range expansion in the same way as in
the usual continuous open space. The relation between the effective range
parameters and the potential parameters is presented in the limit of a large
lattice.


title: Charm elliptic flow in Au+Au collisions at RHIC

abstract:
  Using the perturbative method for the simulation of charmed particles, the
dynamical origin of charm quark elliptic flow is studied in the framework of a
multi-phase transport (AMPT) model. Besides the expected ordering relative to
that of light quarks according to quark masses, charm quark elliptic flow is
seen to be sensitive to the parton scattering cross section. To describe the
observed large elliptic flow of electrons from the decay of charmed mesons, a
charm quark elastic scattering cross section much larger than that estimated
from the perturbative QCD is required.


title: Boson Realization of the su(3)-Algebra. I

abstract:
  Following a general form for the Schwinger boson representation of the
su(M+1) Lipkin model presented in the previous paper, three types of the
orthogonal sets characterizing the su(3)-algebra are proposed. In these three,
third is presented in Appendix. The intrinsic state is specified by two quantum
numbers and two excited state generating operators play a central role.


title: Boson Realization of the su(3)-Algebra. II

abstract:
  On the basis of the Schwinger boson representation for the Lipkin model
developed in (I), the Holstein-Primakoff representation for the su(3)-algebra
is presented. Including the symmetric case, the representation obtained in this
paper contains all the cases.


title:
Selectivity of the Nucleon Induced Deuteron Breakup and Relativistic
  Effects

abstract:
  Theoretical predictions for the nucleon induced deuteron breakup process
based on solutions of the three-nucleon Faddeev equation including such
relativistic features as the relativistic kinematics and boost effects are
presented. Large changes of the breakup cross section in some complete
configurations are found at higher energies. The predicted relativistic
effects, which are mostly of dynamical origin, seem to be supported by existing
data.


title: Stopping and the K/pi horn

abstract:
  We propose a non-equilibrium hadronic model to interpret the observed
excitation function of kaon-to-pion ratios in nuclear collisions at AGS and SPS
energies. The crucial assumption of our model is that due to stronger stopping
at lower energies the lifetime of the fireball is prolonged because the system
has to build up the longitudinal expansion from internal pressure.


title: Azimthally sensitive femtoscopy and v2

abstract:
  I investigate the correlation between spatial and flow anisotropy in
determining the elliptic flow and azimuthal dependence of the HBT correlation
radii in non-central nuclear collisions. It is shown that the correlation radii
are in most cases dominantly sensitive to the anisotropy in space. In case of
v2, the correlation depends strongly on particle species. A procedure for
disentangling the spatial and the flow anisotropy is proposed.


title: Strangeness in ultrarelativistic nuclear collisions

abstract:
  A model for description of the s_{NN}^{1/2} dependence of K+/pi+ ratio at the
CERN SPS and upper AGS energies is proposed. It uses hadronic degrees of
freedom and the amount of produced strangeness is mainly controlled by the
total lifetime of the fireball. Decreasing lifetime with increasing collision
energy is conjectured.


title: The last bursts of Quark Gluon Plasma

abstract:
  We study the behavior of the scalar glueball inside a Quark Gluon Plasma. We
follow the fireball from the plasma phase to the hadronic phase and observe
that an interesting phenomenon might occur which could have experimental
consequences as a signature of Quark Gluon Plasma.


title: Helicity asymmetries in neutrino-nucleus interactions

abstract:
  We investigate the helicity properties of the ejectile in quasi-elastic
neutrino-induced nucleon-knockout reactions and consider the 12C target as a
test case. A formalism based on a relativistic mean-field model is adopted. The
influence of final-state interactions is evaluated within a relativistic
multiple-scattering Glauber approximation (RMSGA) model. Our calculations
reveal that the helicity asymmetries A_l in A(\overline{\nu},\overline{\nu}'N)
processes are extremely sensitive to strange-quark contributions to the weak
vector form-factors. Thereby, nuclear corrections, such as final-state
interactions and off-shell ambiguities in the electroweak current operators,
are observed to be of marginal importance. This facilitates extracting
strange-quark information from the helicity asymmetry A_l.


title:
Three-body treatment of the penetration through the Coulomb field of a
  two-fragment nucleus

abstract:
  On the basis of the Faddeev integral equations method and the Watson-
Feshbach concept of the effective (optical) interaction potential, the first
fully consistent three-body approach to the description of the penetration of a
charged particle through the Coulomb field of a two-particle bound complex
(composed of one charged and one neutral particles) has been developed. A
general formalism has been elaborated and on its basis, to a first
approximation in the Sommerfeld parameter, the influence of the nuclear
structure on the probability of the penetration of a charged particle (the
muon, the pion, the kaon and the proton) through the Gamow barrier of a
two-fragment nucleus (the deuteron and the two lightest lambda hypernuclei,
lambda hypertriton and lambda hyperhelium-5, has been calculated and studied.


title:
Reconstructing $\rho^0$ and $\omega$ mesons from non-leptonic decays in
  C+C at 2AGeV

abstract:
  We predict transverse and longitudinal momentum spectra and yields of
$\rho^0$ and $\omega$ mesons reconstructed from hadron correlations in C+C
reactions at 2~AGeV. The rapidity and $p_T$ distributions for reconstructable
$\rho^0$ mesons differs strongly from the primary distribution, while the
$\omega$'s distributions are only weakly modified. We discuss the temporal and
spatial distributions of the particles emitted in the hadron channel. Finally,
we report on the mass shift of the $\rho^0$ due to its coupling to the
$N^*(1520)$, which is observable in both the di-lepton and $\pi\pi$ channel.
Our calculations can be tested with the Hades experiment at GSI, Darmstadt.


title:
Universal scaling of the rapidity dependent elliptic flow and the
  perfect fluid at RHIC

abstract:
  The pseudo-rapidity dependence of the elliptic flow at various excitation
energies measured by the PHOBOS Collaboration in Au+Au collisions at RHIC is
one of the surprising results that has not been explained before in terms of
hydrodynamical models. Here we show that these data are in agreement with
theoretical predictions based on perfect fluid hydrodynamics.
  We also show that these PHOBOS data satisfy the universal scaling relation
predicted by the Buda-Lund hydrodynamical model, based on exact solutions of
perfect fluid hydrodynamics.


title: Theoretical Description of K-Isomers

abstract:
  A proper treatment of K-mixing is the key to understanding K-isomers. Here,
we present a method based on the projected shell model. This method differs
from the usual description of multi-quasiparticle states by introducing a
transformation to the laboratory frame and a subsequent configuration mixing in
that frame. It allows a quantitative study on the degree of K-violation through
direct calculations of electromagnetic transitions.


title: Interferometry search for new forms of matter in A+A collisions

abstract:
  A method allowing studies of the hadronic matter at the early evolution stage
in A+A collisions is developed. It is based on an interferometry analysis of
approximately conserved values such as the averaged phase-space density (APSD)
and the specific entropy of thermal pions. The plateau found in the APSD
behavior vs collision energy at SPS is associated, apparently, with the
deconfinement phase transition at low SPS energies; a saturation of this
quantity at the RHIC energies indicates the limiting Hagedorn temperature for
hadronic matter.


title:
Form factors in relativistic quantum mechanics approaches and space-time
  translation invariance

abstract:
  Invariance of form factors under Lorentz boosts is a criterion often
advocated to determine whether their estimate in a RQM framework is reliable.
It is shown that verifying relations stemming from covariance properties under
space-time translations could be a more important criterion. Form factors
calculated in different approaches for a simple system are discussed with these
various respects. An approximate method is shown to remove the main
discrepancies related to a violation of the above relations.


title: On the test of the modified BCS at finite temperature

abstract:
  The results and conclusions by Ponomarev and Vdovin [Phys. Rev. C {\bf 72},
034309 (2005)] are inadequate to judge the applicability of the modified BCS
because they were obtained either in the temperature region, where the use of
zero-temperature single-particle spectra is no longer justified, or in too
limited configuration spaces.


title: What can we learn from hydrodynamic analysis of elliptic flow?

abstract:
  We can establish a new picture, the perfect fluid sQGP core and the
dissipative hadronic corona, of the space-time evolution of produced matter in
relativistic heavy ion collisions at RHIC. It is also shown that the picture
works well also in the forward rapidity region through an analysis based on a
new class of the hydro-kinetic model and is a manifestation of deconfinement.


title: Open-charm systems in cold nuclear matter

abstract:
  We study the spectral distributions of charmed meson with $J^P=0^-$ quantum
numbers in cold nuclear matter applying a self-consistent and covariant
many-body approach established previously for the nuclear dynamics of kaons. At
leading orders the computation requires as input the free-space two-body
scattering amplitudes only. Our results are based on the s-wave meson-nucleon
amplitudes obtained recently in terms of a coupled-channel approach. The
amplitudes are characterized by the presence of many resonances in part so far
not observed. This gives rise to an intriguing dynamics of charmed mesons in
nuclear matter. At nuclear saturation density we predict a pronounced two-mode
structure of the $D^+$ mesons with a main branch pushed up by about 32 MeV. The
lower branch reflects the coupling to two resonance-hole states that are almost
degenerate. For the $D^-$ we obtain a single mode pushed up by about 18 MeV
relative to the vacuum mode. Most spectacular are the results for the $D^+_s$
meson. The presence of an exotic resonance-hole state gives rise to a rather
broad and strongly momentum dependent spectral distribution.


title:
Unintegrated parton distributions and pion production in pp collisions
  at RHIC's energies

abstract:
  We compare results of $2 \to 1$ $k_t$-factorization approach with
Kwieci\'nski unintegrated parton distributions and the standard collinear
factorization approach at RHIC and slightly smaller energies. Our approach
contains only one free parameter responsible for internal parton motion in
nucleons. In contrast to recent works in the literature our $k_t$-factorization
approach includes also quark degrees of freedom in addition to purely gluonic
terms. Both mid and forward rapidity regions are considered. We discuss
uncertainties due to fragmentation functions. In general, the
$k_t$-factorization approach gives a better description of the $p_t \sim$ 1 --
4 GeV region both at mid and forward rapidity regions. Our approach leads to
asymmetry in the production of $\pi^+$ and $\pi^-$, very similar to the one
observed very recently by the BRAHMS collaboration.


title: Power-law tailed spectra from equilibrium

abstract:
  We propose that power-law tailed hadron spectra may be viewed as stemming
from a matter in an unconventional equilibrium state typical for non-extensive
thermodynamics. A non-extensive Boltzmann equation, which is able to form such
spectra as a stationary solution, is utilized as a rough model of quark matter
hadronization. Basic ideas about non-extensive simulation of the QCD equation
of state on the lattice are presented.


title: Nuclear applications of inverse scattering, present ... and future?

abstract:
  There now exists a practical method (IP) for the routine inversion of
$S$-matrix elements to produce the corresponding potential. It can be applied
to spin-1/2 and spin-1 projectiles. We survey the ways that IP inversion can be
applied in nuclear physics by inverting $S_{lj}$ derived from theory or from
experiment. The IP inversion method can be extended to invert $S_{lj}(E)$ over
a range of energies to produce a potential $V(r,E) +
\vect{l}\vdot\gvect{\sigma} V_{\rm ls}(r,E)$. It also yields parity-dependent
potentials between pairs of light nuclei and can be convoluted with a direct
search on the $S$-matrix to produce `direct data $\to V$ inversion'. The last
is an economical alternative form of optical model search to fit many
observables (e.g. for polarized deuterons) for many energies, producing an
energy-dependent potential with many parameters (e.g. $T_{\rm R}$ for
deuterons).


title:
Inclusive nucleon emission induced by quasi-elastic neutrino-nucleus
  interactions

abstract:
  A previous model on inclusive charged-current quasi-elastic nuclear reactions
is extended to include neutral- and charged-current nucleon emission reactions.
The problem of outgoing nucleon propagation is treated by means of a Monte
Carlo simulation.


title: Probing Quark Gluon Liquid Using Transverse Momentum Fluctuations

abstract:
  The onset of equilibration in nuclear collisions can lead to related trends
in the centrality dependence of the average transverse momentum, pt
fluctuations and net charge fluctuations. We extend the transport description
of S. Gavin (Phys. Rev. Lett. 92, 162301 (2004)) to include radial flow.


title: General classification and analysis of neutron beta-decay experiments

abstract:
  A method for the general analysis of the sensitivities of neutron beta-decay
experiments to manifestations of possible deviations from the Standard model is
proposed. In a consistent fashion, we take into account all known (radiative
and recoil) corrections which are incorporated within the
  Standard Model to provide a description of angular correlations in neutron
decay in the first order of approximation, or down to the level of $\sim
10^{-5}$. The contributions from models beyond the Standard model are, for low
energy neutron decay, parameterized in terms of vector, axial-vector, scalar
and tensor coupling constants and in terms of parameters related to specific
models. For the present analysis we derive the exact expressions for the
neutron beta decay probability which includes all possible manifestations
models beyond the Standard Model down to level of $\sim 10^{-5}$ without
time-reversal violation. Based on the general expressions for manifestation of
the deviations from the standard model, we present analysis of the
sensitivities for selected neutron decay experiments.


title: Generalized dynamical equation and low energy nucleon dynamics

abstract:
  Low energy nucleon dynamics is investigated by using the generalized
dynamical equation derived in [J. Phys. A v.32, 5657 (1999)]. This equation
extends quantum dynamics to describe the time evolution in the case of
nonlocal-in-time interactions. We show that the use of the generalized
dynamical equation, which allows one to take into account that effective
actions in quantum field theory, arising after integrating out certain degrees
of freedom, are generally nonlocal, provides a new way to formulate the
effective theory of nuclear forces. In this way we construct the most general
possible operator describing the short-range part of the NN interaction in the
1S0 channel. In particular, this operator can be incorporated into the chiral
potential model. This is shown to provide an extension of the standard chiral
approach. Being equivalent to the chiral potential model for some values of the
constants characterizing the short-range of the NN interaction this approach
allows the solutions that cannot be reproduced by any potential model. In this
way we find that for certain values of the constants inconsistent with
potentials models the effect of the short-range forces on the half off-shell 2N
T-matrix with high off-shell momenta grows in magnitude rapidly as the kinetic
energy of outgoing protons decreases at laboratory energies below 15 MeV. We
show that this effect may be the origin of the existing discrepancy between the
theory and experiment in describing the proton-proton bremsstrahlung.


title: Dissipative hydrodynamics for viscous relativistic fluids

abstract:
  Explicit equations are given for describing the space-time evolution of
non-ideal (viscous) relativistic fluids undergoing boost-invariant longitudinal
and arbitrary transverse expansion. The equations are derived from the
second-order Israel-Stewart approach which ensures causal evolution. Both
azimuthally symmetric (1+1)-dimensional and non-symmetric (2+1)-dimensional
transverse expansion are discussed. The latter provides the formal basis for
the hydrodynamic computation of elliptic flow in relativistic heavy-ion
collisions including dissipative effects.


title:
Chiral dynamics in the gamma p --> pi^0 eta p and gamma p --> pi^0 K^0
  Sigma^+ reactions

abstract:
  Using a chiral unitary approach for meson-baryon scattering in the
strangeness zero sector, where the $N^*(1535)$ resonance is dynamically
generated, we study the reactions $\gamma p \to \pi^0 \eta p$ and $\gamma p \to
\pi^0 K^0 \Sigma^+$ at photon energies at which the final states are produced
close to threshold. Among several reaction mechanisms, we find the most
important is the excitation of the $\Delta^*(1700)$ state which subsequently
decays into a pseudoscalar meson and a baryon belonging to the $\Delta(1232)$
decuplet. Hence, the reaction provides useful information with which to test
current theories of the dynamical generation of the low-lying $3/2^-$ states.
The first reaction is shown to lead to sizable cross sections and the
$N^*(1535)$ resonance shape is seen clearly in the $\eta p$ invariant mass
distribution. The same dynamical model is shown to lead to much smaller cross
sections at low energies in the second reaction. Predictions are made for cross
sections and invariant mass distributions which can be compared with
forthcoming experiments at ELSA.


title:
Double neutron/proton ratio of nucleon emissions in isotopic reaction
  systems as a robust probe of nuclear symmetry energy

abstract:
  The double neutron/proton ratio of nucleon emissions taken from two reaction
systems using four isotopes of the same element, namely, the neutron/proton
ratio in the neutron-rich system over that in the more symmetric system, has
the advantage of reducing systematically the influence of the Coulomb force and
the normally poor efficiencies of detecting low energy neutrons. The double
ratio thus suffers less systematic errors. Within the IBUU04 transport model
the double neutron/proton ratio is shown to have about the same sensitivity to
the density dependence of nuclear symmetry energy as the single neutron/proton
ratio in the neutron-rich system involved. The double neutron/proton ratio is
therefore more useful for further constraining the symmetry energy of
neutron-rich matter.


title: Coulomb-scattering and eta - eta-prime mixing angle

abstract:
  The fascinating physics underlying eta and eta-prime mesons can be studied
theoretically and experimentally in various contexts. In this presentation we
want to turn our attention to two important uncorrelated aspects of this vivid
research field which provide yet unexpected challenges or surprises. First we
discuss open questions in the theoretical treatment of Coulomb-interaction in
the context of reaction processes like p p --> p p eta. Then we review eta -
eta-prime and sigma(600) - f_0(980) mixing in the U(3) x U(3) Linear Sigma
Model and extract information on eta - eta-prime mixing and the K*0(800)
resonance from meson-meson scattering.


title: The Two-Body Random Ensemble in Nuclei

abstract:
  Combining analytical and numerical methods, we investigate properties of the
two-body random ensemble (TBRE). We compare the TBRE with the Gaussian
orthogonal ensemble of random matrices. Using the geometric properties of the
nuclear shell model, we discuss the information content of nuclear spectra, and
gain insight in the difficulties encountered when fitting the effective
interaction. We exhibit the existence of correlations between spectral widths
pertaining to different quantum numbers. Using these results, we deduce the
preponderance of spin-zero ground states in the TBRE. We demonstrate the
existence of correlations between spectra with different quantum numbers and/or
in different nuclei.


title: Break-up fragments excitation and the freeze-out volume

abstract:
  We investigate, in microcanonical multifragmentation models, the influence of
the amount of energy dissipated in break-up fragments excitation on freeze-out
volume determination. Assuming a limiting temperature decreasing with nuclear
mass, we obtain for the Xe+Sn at 32 MeV/nucleon reaction [J. D. Frankland et
al., Nucl. Phys. A689, 905 (2001); A689, 940 (2001)] a freeze-out volume almost
half the one deduced using a constant limiting temperature.


title: Correlation femtoscopy

abstract:
  The basics of correlation femtoscopy, recent results from femtoscopy in
relativistic heavy ion collisions and their consequences are shortly reviewed.


title: Nanoparticles as a possible moderator for an ultracold neutron source

abstract:
  Ultracold and very cold neutrons (UCN and VCN) interact strongly with
nanoparticles due to the similarity of their wavelengths and nanoparticles
sizes. We analyze the hypothesis that this interaction can provide efficient
cooling of neutrons by ultracold nanoparticles at certain experimental
conditions, thus increasing the density of UCN by many orders of magnitude. The
present analytical and numerical description of the problem is limited to the
model of independent nanoparticles at zero temperature. Constraints of
application of this model are discussed.


title: Particle Number Fluctuations in Relativistic Bose and Fermi Gases

abstract:
  Particle number fluctuations are studied in relativistic Bose and Fermi
gases. The calculations are done within both the grand canonical and canonical
ensemble. The fluctuations in the canonical ensemble are found to be different
from those in the grand canonical one. Effects of quantum statistics increase
in the grand canonical ensemble for large chemical potential. This is, however,
not the case in the canonical ensemble. In the limit of large charge density a
strongest difference between the grand canonical and canonical ensemble results
is observed.


title: Five lectures on effective field theory

abstract:
  Lectures delivered at the 17th National Nuclear Physics Summer School 2005,
Berkeley, CA, June 6-17, 2005.


title: Particle multiplicities and fluctuations in 200 GeV Au-Au collisions

abstract:
  We use the statistical hadronization model (SHM) to describe hadron
multiplicity yields and fluctuations. We consider
  200 GeV Au-Au collisions, and show that both event averaged yields of stable
particles and resonances, and event-by-event fluctuation of the $K/\pi$ ratio
can be described within the SHM using the same set of thermal parameters,
provided that the phase space occupancy parameter value is significantly above
chemical equilibrium, and the freeze-out temperature is $\sim 140$ MeV. We
present predictions that allow to test the consistency of our results.


title: Single-channel fits and K-matrix constraints

abstract:
  A K-matrix formalism is used to relate single-channel and multi-channel fits.
We show how the single-channel formalism changes as new hadronic channels
become accessible. These relations are compared to those commonly used to fit
pseudoscalar meson photoproduction data.


title: From percolation to the Color Glass Condensate

abstract:
  I review the problem of parton saturation and its implications through three
in principal different approaches, but somewhat related: saturation in a
geometrical approach, QCD saturation through the Color Glass Condensate and
perturbative Pomeron approach with initial conditions. I also make some
comments about how that could be related to a Quark Gluon Plasma formation.


title:
Understanding the rapidity dependence of the elliptic flow and the HBT
  radii at RHIC

abstract:
  The pseudo-rapidity dependence of the elliptic flow at various excitation
energies measured by the PHOBOS Collaboration in Au+Au collisions at RHIC is
one of the surprising results that has not been explained before in terms of
hydrodynamical models. Here we show that these data are in agreement with
theoretical predictions and satisfy the universal scaling relation predicted by
the Buda-Lund hydrodynamical model, based on exact solutions of perfect fluid
hydrodynamics. We also show a theoretical prediction on the rapidity and
transverse momentum scaling of the HBT radii measured in heavy ion collisions,
based on the Buda-Lund model.


title: Shell-model Structure of Exotic 135Sb

abstract:
  Recent studies have provided new experimental information on the very
neutron-rich nucleus 135Sb. We have performed a shell-model calculation for
this nucleus using a realistic effective interaction derived from the CD-Bonn
nucleon-nucleon potential. This gives a very good description of the observed
properties of 135Sb. We show that the anomalously low position of the first
excited state, J=5/2+, and the strongly hindered M1 transition to the ground
state have their origin in the effective neutron-proton interaction.


title:
Low energy nuclear scattering and sub-threshold spectra from a
  multi-channel algebraic scattering theory

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.
Positive (scattering) and negative (sub-threshold) solutions can be found to
predict both the compound nucleus sub-threshold spectrum and all resonances due
to coupled channel effects that occur on a smooth energy varying background.


title:
Solution of multi-channel problems using MCAS for spectra and scattering
  cross sections

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.
Positive (scattering) and negative (sub-threshold) solutions can be found to
predict both the compound nucleus sub-threshold spectrum and all resonances due
to coupled-channel effects that occur on a smooth energy varying background.
The role of the Pauli principle is crucial in defining what interaction
potentials are required to fit data. The theory also gives an algebraic form
for the dynamic polarization potential which adds to the ground state
interaction to define the optical potential that gives the same elastic
scattering cross sections.


title: Latest results from the NA57 experiment

abstract:
  The NA57 experiment at the CERN SPS has measured the production of strange
and multi-strange particles in Pb-Pb (and p-Be) collisions at mid-rapidity. The
collective dynamics of the collision is studied in the transverse and
longitudinal directions as a function of centrality and beam momentum and
analysed based on hydrodynamical models. Central-to-peripheral nuclear
modification factors at 158 A GeV/c are presented and compared with other
measurements and theory.


title: Electromagnetic Interactions in a Chiral Effective Lagrangian for Nuclei

abstract:
  Electromagnetic (EM) interactions are incorporated in a recently proposed
effective field theory of the nuclear many-body problem. Earlier work with this
effective theory exhibited EM couplings that are correct only to lowest order
in both the pion fields and the electric charge. The Lorentz-invariant
effective field theory contains nucleons, pions, isoscalar scalar (\sigma) and
vector (\omega) fields, and isovector vector (\rho) fields. The theory exhibits
a nonlinear realization of SU(2)_L \times SU(2)_R chiral symmetry and has three
desirable features: it uses the same degrees of freedom to describe the
currents and the strong-interaction dynamics, it satisfies the symmetries of
the underlying QCD, and its parameters can be calibrated using
strong-interaction phenomena, like hadron scattering or the empirical
properties of finite nuclei. It has been verified that for normal nuclear
systems, the effective lagrangian can be expanded systematically in powers of
the meson fields (and their derivatives) and can be truncated reliably after
the first few orders. The complete EM lagrangian arising from minimal
substitution is derived and shown to possess the residual chiral symmetry of
massless, two-flavor QCD with EM interactions. The uniqueness of the minimal EM
current is proved, and the properties of the isovector vector and axial-vector
currents are discussed, generalizing earlier work. The residual chiral symmetry
is maintained in additional (non-minimal) EM couplings expressed as a
derivative expansion and in implementing vector meson dominance. The role of
chiral anomalies in the EM lagrangian is briefly discussed.


title:
Event-by-event pT fluctuations and multiparticle clusters in
  relativistic heavy-ion collisions

abstract:
  We explore the dependence of the pT correlations in the event-by-event
analysis of relativistic heavy-ion collisions at RHIC made recently by the
PHENIX and STAR Collaborations. We point out that the observed scaling of
strength of dynamical fluctuations with the inverse number of particles can be
naturally explained by the formation of clusters. We argue that the large
magnitude of the measured covariance implies that the clusters contain at least
several particles. We also discuss whether the clusters may originate from
jets. In addition, we provide numerical estimates of correlations coming from
resonance decays and thermal clusters.


title:
On the relation between nuclear and nucleon Structure Functions and
  their moments

abstract:
  Calculations of nuclear Structure Functions (SF) F_k^A(x,Q^2) routinely
exploit a generalized convolution, involving the SF for nucleons F_k^N and the
linking SF f^{PN,A} of a fictitious nucleus, composed of point-particles, with
the latter usually expressed in terms of hadronic degrees of freedom. For
finite Q^2 the approach seemed to be lacking a solid justification and the same
is the case for recently proposed, effective nuclear parton distribution
functions (pdf), which exactly reproduce the above-mentioned hadronically
computed F_k^A. Many years ago Jaffe and West proved the above convolution in
the Plane Wave Impulse Approximation (PWIA) for the nuclear components in the
convolution. In the present note we extend the above proof to include classes
of nuclear Final State Interactions (FSI). One and the same function appears to
relate parton distribution functions (pdf) in nuclei and nucleons, and SF for
nuclear targets and for nucleons. That relation is the previously conjectured
one,with an entirely different interpretation of f^{PN,A}. We conclude with an
extensive analysis of moments of nuclear SF based on the generalized
convolution. Characteristics of those moments are shown to be quite similar to
the same for a nucleon. We conclude that the above evidences asymptotic freedom
of a nucleon in a medium and not of a composite nucleus.


title: Effects of In-Medium NN Cross Sections on Particle Production

abstract:
  The in-medium modification of nucleon-nucleon (NN) cross sections is
investigated by means of particle production in heavy ion collisions (HIC) at
intermediate energies. In particular, the density dependence of the {\it
inelastic} cross sections considerably affects the pion and kaon yields and
their rapidity distributions. However, the $(\pi^{-}/\pi^{+})$- and
$(K^{+}/K^{0})$-ratios depend only moderately on the in-medium behavior of the
inelastic cross sections. It turns out that particle ratios seem to be robust
observables in determining the nuclear equation of state (EoS) and,
particularly, its isovector sector.


title:
Hartree-Fock and Many-Body Perturbation Theory with Correlated Realistic
  NN-Interactions

abstract:
  We employ correlated realistic nucleon-nucleon interactions for the
description of nuclear ground states throughout the nuclear chart within the
Hartree-Fock approximation. The crucial short-range central and tensor
correlations, which are induced by the realistic interaction and cannot be
described by the Hartree-Fock many-body state itself, are included explicitly
by a state-independent unitary transformation in the framework of the unitary
correlation operator method (UCOM). Using the correlated realistic interaction
V_UCOM resulting from the Argonne V18 potential, bound nuclei are obtained
already on the Hartree-Fock level. However, the binding energies are smaller
than the experimental values because long-range correlations have not been
accounted for. Their inclusion by means of many-body perturbation theory leads
to a remarkable agreement with experimental binding energies over the whole
mass range from He-4 to Pb-208, even far off the valley of stability. The
observed perturbative character of the residual long-range correlations and the
apparently small net effect of three-body forces provides promising
perspectives for a unified nuclear structure description.


title: Baryon number and strangeness: signals of a deconfined antecedent

abstract:
  The correlation between baryon number and strangeness is used to discern the
nature of the deconfined matter produced at vanishing chemical potential in
high-energy nuclear collisions at the BNL RHIC. Comparisons of results of
various phenomenological models with correlations extracted from lattice QCD
calculations suggest that a quasi-particle picture applies. At finite baryon
densities, such as those encountered at the CERN SPS, it is demonstrated that
the presence of a first-order phase transition and the accompanying development
of spinodal decomposition would significantly enhance the number of strangeness
carriers and the associated fluctuations.


title: 3-D hydro + cascade model at RHIC

abstract:
  We present a 3-D hydro + cascade model in which viscosity and a realistic
freezeout process for the hadronic phase are taken into account. We compare our
results to experimental data and discuss the finite state interaction effects
on physical observables.


title:
From finite nuclei to the nuclear liquid drop: leptodermous expansion
  based on the self-consistent mean-field theory

abstract:
  The parameters of the nuclear liquid drop model, such as the volume, surface,
symmetry, and curvature constants, as well as bulk radii, are extracted from
the non-relativistic and relativistic energy density functionals used in
microscopic calculations for finite nuclei. The microscopic liquid drop energy,
obtained self-consistently for a large sample of finite, spherical nuclei, has
been expanded in terms of powers of A^{-1/3} (or inverse nuclear radius) and
the isospin excess (or neutron-to-proton asymmetry). In order to perform a
reliable extrapolation in the inverse radius, the calculations have been
carried out for nuclei with huge numbers of nucleons, of the order of 10^6. The
Coulomb interaction has been ignored to be able to approach nuclei of arbitrary
sizes and to avoid radial instabilities characteristic of systems with very
large atomic numbers. The main contribution to the fluctuating part of the
binding energy has been removed using the Green's function method to calculate
the shell correction. The limitations of applying the leptodermous expansion to
actual nuclei are discussed. While the leading terms in the macroscopic energy
expansion can be extracted very precisely, the higher-order, isospin-dependent
terms are prone to large uncertainties due to finite-size effects.


title:
Nuclear shape dependence of Gamow-Teller distributions in
  neutron-deficient Pb isotopes

abstract:
  We study Gamow-Teller strength distributions in the neutron-deficient even
isotopes (184-194)Pb in a search for signatures of deformation. The microscopic
formalism used is based on a deformed quasiparticle random phase approximation
(QRPA) approach, which involves a self-consistent quasiparticle deformed Skyrme
Hartree-Fock (HF) basis and residual spin-isospin forces in both the
particle-hole and particle-particle channels. By analyzing the sensitivity of
the Gamow-Teller strength distributions to the various ingredients in the
formalism, we conclude that the beta-decay of these isotopes could be a useful
tool to look for fingerprints of nuclear deformation.


title: The Nuclear matter stability in a non-local chiral quark model

abstract:
  We study the stability of the nuclear matter in a non-local
Nambu-Jona-Lasinio model. We work out the equation of state in a relativistic
Faddeev approach where we take into account the internal structure of nucleon.
We show that the binding energy saturates when the nucleon as a composite
particle made of quarks is incorporated. After truncation of the two-body
channels to the scalar and axial-vector diquarks, a relativistic Faddeev
equation for nucleon bound states in medium is solved in the covariant
diquark-quark picture. We investigate the nucleon properties in the nuclear
medium such as the role of diquarks within the nucleon and the in-medium
modification of the nucleon mass and size.


title: A High Energy Nuclear Database Proposal

abstract:
  We propose to develop a high-energy heavy-ion experimental database and make
it accessible to the scientific community through an on-line interace. This
database will be searchable and cross-indexed with relevant publications,
including published detector descriptions. Since this database will be a
community resource, it requires the high-energy nuclear physics community's
financial and manpower support. This database should eventually contain all
published data from the Bevalac, AGS and SPS to RHIC and LHC energies,
proton-proton to nucleus-nucleus collisions as well as other relevant systems
and all measured observables. Such a database would have tremendous scientific
payoff as it makes systematic studies easier and allows simpler benchmarking of
theoretical models to a broad range of old and new experiments. Furthermore,
there is a growing need for compilations of high-energy nuclear data for
applications including stockpile stewardship, technology development for
intertial confinement fusion and target and source development for upcoming
facilities such as the Next Linear Collider. To enhance the utility of this
database, we propose periodically performing evaluations of the data and
summarizing the results in topical reviews.


title: QGP and Modified Jet Fragmentation

abstract:
  Recent progresses in the study of jet modification in hot medium and their
consequences in high-energy heavy-ion collisions are reviewed. In particular, I
will discuss energy loss for propagating heavy quarks and the resulting
modified fragmentation function. Medium modification of the parton
fragmentation function due to quark recombination are formulated within finite
temperature field theory and their implication on the search for deconfined
quark-gluon plasma is also discussed


title:
Ordered bicontinuous double-diamond morphology in subsaturation nuclear
  matter

abstract:
  We propose to identify the new "intermediate" morphology in subsaturation
nuclear matter observed in a recent quantum molecular dynamics simulation with
the ordered bicontinuous double-diamond structure known in block copolymers. We
estimate its energy density by incorporating the normalized area-volume
relation given in a literature into the nuclear liquid drop model. The
resulting energy density is higher than the other five known morphologies.


title: A Complex Shell Model Representation Including Antibound States

abstract:
  A generalization of the Complex Shell Model formalism is presented which
includes antibound states in the basis. These states, together with bound
states, Gamow states, and the continuum background, represented by properly
chosen scattering waves, form a representation where all states are treated on
the same footing. Two-particle states are evaluated within this formalism and
observable two-particle resonances are defined. The formalism is illustrated in
the well known case of $^{11}$Li in its bound ground state and in
$^{70}$Ca(gs), which is also bound. Both cases are found to have a halo
structure. These halo structures are described within the generalized Complex
Shell Model. We investigated the formation of two-particle resonances in these
nuclei, but no evidence of such resonances was found.


title:
Superdeformation and clustering in $^{40}$Ca studied with
  Antisymmetrized Molecular Dynamics

abstract:
  Deformed states in $^{40}$Ca are investigated with a method of
antisymmetrized molecular dynamics. Above the spherical ground state,
rotational bands arise from a normal deformation and a superdeformation as well
as an oblate deformation. The calculated energy spectra and $E2$ transition
strengths in the superdeformed band reasonably agree to the experimental data
of the superdeformed band starting from the $0^+_3$ state at 5.213 MeV. By the
analysis of single-particle orbits, it is found that the superdeformed state
has particle-hole nature of an $8p$-$8h$ configuration. One of new findings is
parity asymmetric structure with $^{12}$C+$^{28}$Si-like clustering in the
superdeformed band. We predict that $^{12}$C+$^{28}$Si molecular bands may be
built above the superdeformed band due to the excitation of inter-cluster
motion. They are considered to be higher nodal states of the superdeformed
state. We also suggest negative-parity bands caused by the parity asymmetric
deformation.


title: The triton and three-nucleon force in nuclear lattice simulations

abstract:
  We study the triton and three-nucleon force at lowest chiral order in
pionless effective field theory both in the Hamiltonian and Euclidean nuclear
lattice formalism. In the case of the Euclidean lattice formalism, we derive
the exact few-body worldline amplitudes corresponding to the standard many-body
lattice action. This will be useful for setting low-energy coefficients in
future nuclear lattice simulations. We work in the Wigner SU(4)-symmetric limit
where the S-wave scattering lengths {1}S{0} and {3}S{1} are equal. By comparing
with continuum results, we demonstrate for the first time that the nuclear
lattice formalism can be used to study few-body nucleon systems.


title:
Probing the Nuclear Equation of State in the quasi-elastic
  nucleus-nucleus scattering

abstract:
  Large-angle elastic scattering of alpha-particle and strongly-bound light
nuclei at a few tens MeV/nucleon has shown the pattern of rainbow scattering.
This interesting process was shown to involve a significant overlap of the two
colliding nuclei, with the total nuclear density well above the saturation
density of normal nuclear matter (NM). For a microscopic calculation of the
nucleus-nucleus potential within the folding model, we have developed a density
dependent nucleon-nucleon (NN) interaction based on the G-matrix interaction
M3Y. Our folding analysis of the refractive 4He, 12C, and 16O elastic
scattering shows consistently that the NM incompressibility K should be around
250 MeV which implies a rather soft nuclear Equation of State (EOS). To probe
the symmetry part of the nuclear EOS, we have used the isovector coupling to
link the isospin dependence of the proton optical potential to the cross
section of (p,n) charge-exchange reactions exciting the isobaric analog states
in nuclei of different mass regions. With the isospin dependence of the NN
interaction fine tuned to reproduce the charge exchange data, a realistic
estimate of the NM symmetry energy has been made.


title:
Hanbury-Brown-Twiss Interferometry with Identical Bosons in Relativistic
  Heavy Ion Collisions: Comparisons with Hadronic Scattering Models

abstract:
  Identical boson Hanbury-Brown-Twiss interferometry as applied to relativistic
heavy-ion collisions is reviewed. Emphasis is placed on the use of hadronic
scattering models to interpret the physical significance of experimental
results. Interferometric studies with center-of-mass energies from < 1
GeV/nucleon up to 5500 GeV/nucleon are considered.


title:
Microcanonical Thermostatistics, the basis for a New Thermodynamics,
  "heat can flow from cold to hot", and nuclear multifragmentation. The correct
  treatment of Phase Separation after 150 years of statistical mechanics

abstract:
  Equilibrium statistics of finite Hamiltonian systems is fundamentally
described by the microcanonical ensemble (ME). Canonical, or grand-canonical
partition functions are deduced from this by Laplace transform. Only in the
thermodynamic limit are they equivalent to ME for homogeneous systems.
Therefore ME is the only ensemble for non-extensive/inhomogeneous systems like
nuclei or stars where the $\lim_{N\to \infty,\rho=N/V=const}$ does not exist.
Conventional canonical thermo-statistic is inapplicable for non-extensive
systems. This has far reaching fundamental and quite counter-intuitive
consequences for thermo-statistics in general: Phase transitions of first order
are signaled by convexities of $S(E,N,Z,...)$ \cite{gross174}. Here the heat
capacity is {\em negative}. In these cases heat can flow from cold to hot! The
original task of thermodynamics, the description of boiling water in heat
engines can now be treated. Consequences of this basic peculiarity for nuclear
statistics as well for the fundamental understanding of Statistical Mechanics
in general are discussed. Experiments on hot nuclei show all these novel
phenomena in a rich variety. The close similarity to inhomogeneous astro
physical systems will be pointed out. \keyword{Microcanonical statistics, first
order transitions, phase separation, steam engines, nuclear multifragmentation,
negative heat capacity}


title: Bethe-Salpeter equation in Minkowski space with cross-ladder kernel

abstract:
  A new method for solving the Bethe-Salpeter equation is developed. It allows
to find the Bethe-Salpeter amplitudes both in Minkowski and in Euclidean spaces
and, as a by product, the light-front wave function. The method is valid for
any kernel given by irreducible Feynman graphs. Bethe-Salpeter and Light-Front
equations for scalar particles with ladder + cross-ladder kernel are solved.


title:
Vector-Isovector Excitations at Finite Density and Temperature and the
  Validity of Brown-Rho Scaling

abstract:
  Recent work reported at the Quark Matter Conference 2005 has led to the
suggestion that Brown-Rho scaling is ruled out by the NA60 data. (Brown-Rho
scaling describes the reduction of hadronic masses in matter and at finite
temperature.) In the present work we argue that the interpretation of the
experimental data presented at the Quark Matter Conference is not correct and
that Brown-Rho scaling is valid. To make this argument we discuss the evolution
in time of the excited hadronic system and suggest that the system is
deconfined at the earliest times and becomes confined when the density and
temperature decrease as the system evolves. Thus, we suggest that we see both
the properties of the deconfined and confined systems in the experimental data.
In our interpretation, Brown-Rho scaling refers to the later times of the
collision, when the system is in the confined phase.


title:
The fully self-consistent quasiparticle random phase approximation and
  its application to the isobaric analog resonances

abstract:
  A microscopic model aimed at the description of charge-exchange nuclear
excitations along isotopic chains which include open-shell systems, is
developed. It consists of quasiparticle random phase approximation (QRPA) made
on top of Hartree-Fock-Bardeen-Cooper-Schrieffer (HF-BCS). The calculations are
performed by using the Skyrme interaction in the particle-hole channel and a
zero-range, density-dependent pairing force in the particle-particle channel.
At variance with the (many) versions of QRPA which are available in literature,
in our work special emphasis is put on the full self-consistency. Its
importance, as well as the role played by the charge-breaking terms of the
nuclear Hamiltonian, like the Coulomb interaction, the charge symmetry and
charge independence breaking (CSB-CIB) forces and the electromagnetic
spin-orbit, are elucidated by means of numerical calculations of the isobaric
analog resonances (IAR). The theoretical energies of these states along the
chain of the Sn isotopes agree well with the experimental data in the stable
isotopes. Predictions for unstable systems are presented.


title: Towards exact variational Monte-Carlo calculations in light nuclei

abstract:
  This paper is being withdrawn by the authors in order to correct some errors
and also to introduce improved theoretical techniques.


title: Autocorrelation of Hadrons in Jets Produced in Heavy-Ion Collisions

abstract:
  Autocorrelation of two pions produced in heavy-ion collisions at intermediate
$p_T$ is calculated in the framework of the recombination model. The
differences of the pseudo-rapidities and azimuthal angles of the two pions are
related to the angle between two shower partons in a jet. It is shown how the
autocorrelation distribution reveals the properties of jet cone of the shower
partons created by high-$p_T$ partons in hard collisions.


title:
Forward-angle K+ Lambda photoproduction in a Regge-plus-resonance
  approach

abstract:
  We present an effective-Lagrangian description for forward-angle K+ Lambda
photoproduction from the proton, valid for photon lab energies from threshold
up to 16 GeV. The high-energy part of the amplitude is modeled in terms of
t-channel Regge-trajectory exchange. The sensitivity of the calculated
observables to the Regge-trajectory phase is investigated in detail. The model
is extended towards the resonance region by adding a number of s-channel
resonances to the t-channel background. The proposed hybrid
``Regge-plus-resonance'' (RPR) approach allows one to exploit the
p(gamma,K+)Lambda data in their entirety, resulting in stronger constraints on
both the background and resonance couplings. The high-energy data can be used
to fix the background contributions, leaving the resonance couplings as the
sole free parameters in the resonance region. We compare various
implementations of the RPR model, and explore to what extent the description of
the data can be improved by introducing the ``new'' resonances D13(1900) and
P11(1900). Despite its limited number of free parameters, the proposed RPR
approach provides an efficient description of the p(gamma,K+)Lambda dynamics in
and beyond the resonance region.


title: Chiral dynamics in "gamma p --> pi^0 eta p" and related reactions

abstract:
  Using a chiral unitary approach for meson-baryon scattering in the
strangeness zero sector, where the $N^*(1535)$ and $\Delta^*(1700)$ resonances
are dynamically generated, we study the reactions $\gamma p \to \pi^0 \eta p$
and $\gamma p \to \pi^0 K^0 \Sigma^+$ at photon energies at which the final
states are produced close to threshold. Among several reaction mechanisms, we
find the most important is the excitation of the $\Delta^*(1700)$ state which
subsequently decays into a pseudoscalar meson and the $N^*(1535)$. Hence, the
reaction provides useful information with which to test current theories of the
dynamical generation of the low-lying $1/2^-$ and $3/2^-$ states. Predictions
are made for cross sections and invariant mass distributions which can be
compared with forthcoming experiments at ELSA.


title: Nuclear Forces and Chiral Symmetry

abstract:
  We review the main achievements of the research programme for the study of
nuclear forces in the framework of chiral symmetry and discuss some problems
which are still open.


title:
Effects of beta-gamma coupling in transitional nuclei and the validity
  of the approximate separation of variables

abstract:
  Exact numerical diagonalization is carried out for the Bohr Hamiltonian with
a beta-soft, axially stabilized potential. Wave function and observable
properties are found to be dominated by strong beta-gamma coupling effects. The
validity of the approximate separation of variables introduced with the X(5)
model, extensively applied in recent analyses of axially stabilized
transitional nuclei, is examined, and the reasons for its breakdown are
analyzed.


title: Low-momentum nucleon-nucleon interaction and shell-model calculations

abstract:
  We discuss the use of the low-momentum nucleon-nucleon NN interaction V-low-k
in the derivation of the shell-model effective interaction and emphasize its
practical value as an alternative to the Brueckner G-matrix method. We present
some selected results of our current study of exotic nuclei around closed
shells, which have been obtained starting from the CD-Bonn potential. We also
show some results of calculations performed with different phase-shift
equivalent NN potentials, and discuss the effect of changes in the cutoff
momentum which defines the V-low-k potential.


title:
Effects of mode-mode and isospin-isospin correlations on domain
  formation of disoriented chiral condensates

abstract:
  The effects of mode-mode and isospin-isospin correlations on nonequilibrium
chiral dynamics are investigated by using the method of the time dependent
variational approach with squeezed states as trial states. Our numerical
simulations show that large domains of the disoriented chiral condensate (DCC)
are formed due to the combined effect of the mode-mode and isospin-isospin
correlations. Moreover, it is found that, when the mode-mode correlation is
included, the DCC domain formation is accompanied by the amplification of the
quantum fluctuation, which implies the squeezing of the state. However, neither
the DCC domain formation nor the amplification of the quantum fluctuation is
observed if only the isospin-isospin correlation is included. This suggests
that the mode-mode coupling plays a key role in the DCC domain formation.


title:
Covariant kinetic freeze out description through a finite space-time
  layer

abstract:
  We develop and analyze a covariant FO probability valid for a finite
space-time layer.


title:
A description of the yrast states in 24-Mg by the self-consistent
  3D-cranking model

abstract:
  With the self-consistent 3D-cranking model, the ground-state rotational band
in 24-Mg is analysed. A role of triaxial deformation is discussed, in
particular, in a description of the observed two I=8+ states.


title: Survival of Back-to-Back Correlations for Finite Expanding Fireballs

abstract:
  Back-to-Back Correlations (BBC) of particle-antiparticle pairs are predicted
to appear if hot and dense hadronic matter is formed in high energy
nucleus-nucleus collisions. The BBC correlations are related to in-medium
mass-modification and squeezing of the quanta involved. The formalisms are
analogous in the bosonic (bBBC) and in the fermionic (fBBC) cases. Both the
bBBC and the fBBC are positive and unlimited correlations of similar strength.
For testing the survival and the intensity of the effect in a more realistic
situation, we study the back-to-back correlations for mass-modification
occurring in a finite sized, thermalized medium. For illustration, we consider
a non-relativistically expanding fireball with finite emission time. We show
that the BBC signal indeed survives the expansion and flow effects, with
sufficient magnitude to be observed at RHIC.


title:
Hartree-Fock-Bogolyubov calculations for nuclei with tetrahedral
  deformation

abstract:
  Hartree-Fock-Bogolyubov solutions corresponding to the tetrahedral
deformation are found in six tetrahedrally doubly-magic nuclei. Values of the
beta32 deformation, depths of the tetrahedral minima, and their energies
relative to the co-existing quadrupole minima are determined for several
versions of the Skyrme force. Reduction of the tetrahedral deformation energies
by pairing correlations is quantitatively analysed. In light nuclei, shallow
tetrahedral minima are found to be the lowest in energy, while in heavy nuclei,
the minima are deeper but appear at a few MeV of excitation.


title: Freeze out in narrow and wide layers

abstract:
  The freeze out of particles from a layer of finite thickness is discussed in
a phenomenological kinetic model. The proposed model, based on the Modified
Boltzman Transport Equation, is Lorentz invariant and can be applied equally
well for the freeze out layers with space-like and time-like normal vectors. It
leads to non-equilibrated post freeze out distributions. The dependence of the
resulting distribution on the thickness of the layer is presented and discussed
for a space-like freeze out scenario.


title:
Predicting narrow states in the spectrum of a nucleus beyond the proton
  drip line

abstract:
  Properties of particle-unstable nuclei lying beyond the proton drip line can
be ascertained by considering those (usually known) properties of its mirror
neutron-rich system. We have used a multi-channel algebraic scattering theory
to map the known properties of the neutron-${}^{14}$C system to those of the
proton-${}^{14}$O one from which we deduce that the particle-unstable
${}^{15}$F will have a spectrum of two low lying broad resonances of positive
parity and, at higher excitation, three narrow negative parity ones. A key
feature is to use coupling to Pauli-hindered states in the target.


title: Phi-Phi Back-to-Back Correlations in Finite Expanding Systems

abstract:
  Back-to-Back Correlations (BBC) of particle-antiparticle pairs are predicted
to appear if hot and dense hadronic matter is formed in high energy
nucleus-nucleus collisions. The BBC are related to in-medium mass-modification
and squeezing of the quanta involved. Although the suppression of finite
emission times were already known, the effects of finite system sizes and of
collective phenomena had not been studied yet. Thus, for testing the survival
and magnitude of the effect in more realistic situations, we study the BBC when
mass-modification occurs in a finite sized, thermalized medium, considering a
non-relativistically expanding fireball with finite emission time, and
evaluating the width of the back-to-back correlation function. We show that the
BBC signal indeed survives the expansion and flow effects, with sufficient
magnitude to be observed at RHIC.


title:
Distinguishing between Dirac and Majorana neutrinos with two-particle
  interferometry

abstract:
  Two-particle interferometry, a second-order interference effect, is explored
as another possible tool to distinguish between massive Dirac and Majorana
neutrinos. A simple theoretical framework is discussed in the context of
several gedanken experiments. The method can in principle provide both the mass
scale and the quantum nature of the neutrino for a certain class of incoherent
left-handed source currents.


title: CEM03 and LAQGSM03 - new modeling tools for nuclear applications

abstract:
  An improved version of the Cascade-Exciton Model (CEM) of nuclear reactions
realized in the code CEM2k and the Los Alamos version of the Quark-Gluon String
Model (LAQGSM) have been developed recently at LANL to describe reactions
induced by particles and nuclei for a number of applications. Our CEM2k and
LAQGSM merged with the GEM2 evaporation/fission code by Furihata have
predictive powers comparable to other modern codes and describe many reactions
better than other codes; therefore both our codes can be used as reliable event
generators in transport codes for applications. During the last year, we have
made a significant improvements to the intranuclear cascade parts of CEM2k and
LAQGSM, and have extended LAQGSM to describe photonuclear reactions at energies
to 10 GeV and higher. We have produced in this way improved versions of our
codes, CEM03.01 and LAQGSM03.01. We present a brief description of our codes
and show illustrative results obtained with CEM03.01 and LAQGSM03.01 for
different reactions compared with predictions by other models, as well as
examples of using our codes as modeling tools for nuclear applications.


title: Multi chiral-doublets in one single nucleus

abstract:
  Adiabatic and configuration-fixed constraint triaxial relativistic mean field
(RMF) approaches are developed for the first time and a new phenomenon, the
existence of multi chiral-doublets (M$\chi$D), i.e., more than one pairs of
chiral doublets bands in one single nucleus, is suggested for nuclei in A~100
region, typically for $^{106}$Rh, based on the triaxial deformations together
with their corresponding proton and neutron configurations.


title:
Triple-Gluon and Triple-Quark Elastic Scatterings and Early
  Thermalization

abstract:
  Three-gluon to three-gluon scatterings lead to rapid thermalization of gluon
matter created in central Au-Au collisions at RHIC energies. Thermalization of
quark matter is studied from three-quark to three-quark scatterings.


title: Separability of a Low-Momentum Effective Nucleon-Nucleon Potential

abstract:
  A realistic nucleon-nucleon potential is transformed into a low-momentum
effective one (LMNN) using the Okubo theory. The separable potentials are
converted from the LMNN with a universal separable expansion method and a
simple Legendre expansion. Through the calculation of the triton binding
energies, the separability for the convergence of these ranks is evaluated. It
is found that there is a tendency for the lower momentum cutoff parameter
$\Lambda$ of LMNN to gain good separability.


title: Ab initio calculation of the 4He(e,e'd)d reaction

abstract:
  The two-body knock-out reaction 4He(e,e'd)d is calculated at various momentum
transfers. The full four-nucleon dynamics is taken into account microscopically
both in the initial and the final states. As NN interaction the central
MT-I/III potential is used. The calculation shows a strong reduction of the
coincidence cross section due to the final state interaction. Nonetheless the
theoretical results exhibit a considerable overestimation of the experimental
cross section at lower momentum transfer. Comparisons with other, less
complete, calculations suggest that consideration of a more realistic ground
state might not be sufficient for a good agreement with experiment, rather a
more realistic final state interaction could play an essential role.