title:
Two-pion-exchange parity-violating potential and $\vec{n} p \to d
  \gamma$

abstract:
  We calculate the parity-violating nucleon-nucleon potential in heavy-baryon
chiral perturbation theory up to the next-to-next-to-leading order. The
one-pion exchange comes in the leading order and the next-to-next-to-leading
order consists of two-pion-exchange and the two-nucleon contact terms. In order
to investigate the effect of the higher order contributions, we calculate the
parity-violating asymmetry in $\vec{n} p \to d \gamma$ at the threshold. The
one-pion dominates the physical observable and the two-pion contribution is
about or less than 10% of the one-pion contribution.


title: Antibound States and Halo Formation in the Gamow Shell Model

abstract:
  The open quantum system formulation of the nuclear shell model, the so-called
Gamow Shell Model (GSM), is a multi-configurational SM that employs a
single-particle basis given by the Berggren ensemble consisting of Gamow states
and the non-resonant continuum of scattering states. The GSM is of particular
importance for weakly bound/unbound nuclear states where both many-body
correlations and the coupling to decay channels are essential. In this context,
we investigate the role of l=0 antibound (virtual) neutron single-particle
states in the shell model description of loosely bound wave functions, such as
the ground state wave function of a halo nucleus 11Li.


title: High p_T Hadron Correlation and No Correlation

abstract:
  An overview of the correlation among high-p_T hadrons produced in heavy-ion
collisions is presented. Emphasis is placed on the physical processes that can
quantitatively account for the data on correlations in p_T, \eta and \phi on
the near and far sides. Predictions are made on processes that have no
observable correlations for hadrons produced at intermediate and higher p_T at
RHIC and LHC.


title:
Self-Consistent Separable Rpa for Skyrme Forces: Giant Resonances in
  Axial Nuclei

abstract:
  We formulate the self-consistent separable random-phase-approximation (SRPA)
method and specify it for Skyrme forces with pairing for the case of axially
symmetric deformed nuclei. The factorization of the residual interaction allows
to avoid diagonalization of high-rank RPA matrices, which dramatically reduces
the computational expense. This advantage is crucial for the systems with a
huge configuration space, first of all for deformed nuclei. SRPA takes
self-consistently into account the contributions of both time-even and time-odd
Skyrme terms as well as of the Coulomb force and pairing. The method is
implemented to description of isovector E1 and isoscalar E2 giant resonances in
a representative set of deformed nuclei: $^{154}$Sm, $^{238}$U, and $^{254}$No.
Four different Skyrme parameterizations (SkT6, SkM*, SLy6, and SkI3) are
employed to explore dependence of the strength distributions on some basic
characteristics of the Skyrme functional and nuclear matter. In particular, we
discuss the role of isoscalar and isovector effective masses and their relation
to time-odd contributions. High sensitivity of the right flank of E1 resonance
to different Skyrme forces and the related artificial structure effects are
analyzed.


title: Are there plasminos in superconductors?

abstract:
  Hot and/or dense, normal-conducting systems of relativistic fermions exhibit
a particular collective excitation, the so-called plasmino. We compute the
one-loop self-energy, the dispersion relation and the spectral density for
fermions interacting via attractive boson exchange. It is shown that plasminos
also exist in superconductors.


title:
Effect of revised $R_n$ measurements on extended Gari-Krumpelmann model
  fits to nucleon electromagnetic form factors

abstract:
  The extended Gari-Krumpelmann (GK) model of nucleon electromagnetic form
factors, in which the $\rho$, $\rho'$, $\omega$, $\omega'$ and $\phi$ vector
meson pole contributions evolve at high momentum transfer to conform to the
predictions of perturbative QCD (pQCD), was recently shown to provide a very
good overall fit to all the nucleon electromagnetic form factor (emff) data,
including the preliminary $R_p$ and $R_n$ polarization data available in 2002,
but excluding the older $G_{Ep}$ and $G_{En}$ differential cross section data
that was inconsistent with the $R_p$ and $R_n$ data. The recently published
final version of the polarization data of the electric to magnetic ratio $R_p$
differs little from the preliminary values for the former, but the new values
of $R_n$ are midway between the preliminary values and those inferred from the
differential cross section data and the Rosenbluth separation. A new fit of the
parameters of the same model has been made with the final $R_p$ and $R_n$ data
replacing the preliminary values and the addition of some new $R_n$ and
$G_{Mn}$ data. Again there is a good fit to all the data when excluding the
differentialcross section data that is inconsistent with the polarization data.
This includes a very good fit of the $R_p$ data, which was not possible when
the differential cross section $G_(En)$ data was used in place of the
polarization $R_n$ data. Thus the change between the preliminary and final
$R_n$ data, while substantial, has not impeded the good simultaneous fit to the
neutron and proton data. The parameters, fit to the data and predictions of the
new model are compared to those of the previous models. Low momentum structures
that appear in some data analyses are partially reproduced by the model.


title:
Universality of the saturation scale and the initial eccentricity in
  heavy ion collisions

abstract:
  Recent estimates that Color Glass Condensate initial conditions may generate
a larger initial eccentricity for noncentral relativistic heavy ion collisions
(relative to the initial eccentricity assumed in earlier hydrodynamic
calculations) have raised the possibility of a higher bound on the viscosity of
the Quark Gluon Plasma. We show that this large initial eccentricity results in
part from a definition of the saturation scale as proportional to the number of
nucleons participating in the collision. A saturation scale proportional to the
nuclear thickness function (and therefore independent of the probe) leads to a
smaller eccentricity, albeit still larger than the value used in hydrodynamic
models. Our results suggest that the early elliptic flow in heavy ion
collisions (unlike multiplicity distributions) is sensitive to the universality
of the saturation scale in high energy QCD.


title: $\Lambda$$\Lambda$ interactions in finite-density QCD sum rules

abstract:
  The properties of $\Lambda$-hyperons in pure $\Lambda$ matter are studied
with the finite-density QCD sum rule approach. The first order quark and gluon
condensates in $\Lambda$ nuclear matter are deduced from the chiral
perturbation theory. The sum rule predictions are sensitive to the four-quark
condensates, $<\bar{q}q>^2_{\rho}$ and $<\bar{q}q>_{\rho}<\bar{s}s>_{\rho}$,
and the $\pi N$ sigma term. When $<\bar{q}q>^2_{\rho}$ is nearly independent of
density and $<\bar{q}q>_{\rho}<\bar{s}s>_{\rho}$ depends strongly on density,
we can obtain weakly attractive $\Lambda$$\Lambda$ potentials (about several
MeV) in low $\Lambda$ density region, which agree with the information from the
latest double $\Lambda$ hyper-nucleus experiments. The nearly no density
dependence of $<\bar{q}q>^2_{\rho}$ and strong density dependence of
$<\bar{q}q>_{\rho}<\bar{s}s>_{\rho}$ can be explained naturally if the
properties of $<\bar{q}q>^2_{\rho}$ and $<\bar{q}q>_{\rho}<\bar{s}s>_{\rho}$
are assumed to be similar to those of $\pi\pi$ and $\bar{K} K$ in nuclear
medium, respectively.


title: No-core shell model in an effective-field-theory framework

abstract:
  We present a new approach to the construction of effective interactions
suitable for many-body calculations by means of the no-core shell model (NCSM).
We consider an effective field theory (EFT) with only nucleon fields directly
in the NCSM model spaces. In leading order, we obtain the strengths of the
three contact terms from the condition that in each model space the
experimental ground-state energies of 2H, 3H and 4He be exactly reproduced. The
first (0^+;0) excited state of 4He and the ground state of 6Li are then
obtained by means of NCSM calculations in several spaces and frequencies. After
we remove the harmonic-oscillator frequency dependence, we predict for 4He an
energy level for the first (0^+;0) excited state in remarkable agreement with
the experimental value. The corresponding 6Li binding energy is about 70% of
the experimental value, consistent with the expansion parameter of the EFT.


title:
Roles of isoscalar hyperons in probing the density dependence of the
  nuclear symmetry energy

abstract:
  The role of the isoscalar hyperon Lambda in probing the density dependence of
the nuclear symmetry energy is studied in multi-Lambda hypernuclei,
hyperon-rich matter and neutron stars in relativistic models. Relationships
between the properties of three types of objects and the neutron thickness in
208Pb are established with respect to the isoscalar-isovector coupling that
modifies the density dependence of the symmetry energy. The exotic isotopes far
from the neutron drip line can be stabilized by filling in considerable Lambda
hyperons. The difference of the binding energy of multi-Lambda hypernuclei from
different models is attributed to different symmetry energies. The isovector
potential together with the neutron thickness in multi-Lambda hypernuclei
investigated is very sensitive to the isoscalar-isovector coupling. The large
sensitivity of the Lambda hyperon fraction to the isoscalar-isovector coupling
occurs at about 2-3 rho_0 in beta equilibrated hyperon-rich matter. In neutron
stars with hyperonization, an on-off effect with respect to the
isoscalar-isovector coupling exists for the neutron star radius.


title: Fluctuations due to the nonlocal character of collisions

abstract:
  It is shown that the collision integral describing the nonlocal character of
collisions leads to the same mean-field fluctuations as proposed by
Boltzmann-Langevin pictures. It is argued that this appropriate collision
integral contains the fluctuation-dissipation theorems in equilibrium itself
and therefore there is no need to assume additionally stochasticity. This leads
to tremendous simplifications in numerical simulation schemes.


title: Low Densities Instability of Relativistic Mean Field Models

abstract:
  The effects of the symmetry energy softening of the relativistic mean field
(RMF) models on the properties of matter with neutrino trapping are
investigated. It is found that the effects are less significant than those in
the case without neutrino trapping. The weak dependence of the equation of
state on the symmetry energy is shown as the main reason of this finding. Using
different RMF models the dynamical instabilities of uniform matters, with and
without neutrino trapping, have been also studied. The interplay between the
dominant contribution of the variation of matter composition and the role of
effective masses of mesons and nucleons leads to higher critical densities for
matter with neutrino trapping. Furthermore, the predicted critical density is
insensitive to the number of trapped neutrinos as well as to the RMF model used
in the investigation. It is also found that additional nonlinear terms in the
Horowitz-Piekarewicz and Furnstahl-Serot-Tang models prevent another kind of
instability, which occurs at relatively high densities. The reason is that the
effective sigma meson mass in their models increases as a function of the
matter density.


title: Half-lives of $\alpha$-emitters approaching the N=Z line

abstract:
  The half-lives of newly observed $\alpha$-emitters $^{105}$Te and $^{109}$Xe
[Seweryniak \textit{et al.}, Phys. Rev. C \textbf{73}, 061301(R) (2006);
Liddick \textit{et al.}, Phys. Rev. Lett. \textbf{97}, 082501 (2006)] are
investigated by the density-dependent cluster model. The half-lives of
$\alpha$-emitters close to the N=Z line are also studied in a unified framework
where the influence of the nuclear deformation is properly taken into account.
Good agreement between model and data is obtained and some possible
$\alpha$-emitters are suggested for future experiments.


title: Branching ratios of $\alpha$-decay to excited states of even-even nuclei

abstract:
  We make a systematic calculation on $\alpha$-decay branching ratios to
members of ground-state rotational band and to excited $0^{+}$ states of
even-even nuclei by a simple barrier penetration approach. The branching ratios
to the excited states of daughter nucleus are determined by the $\alpha$-decay
energy, the angular momentum of $\alpha$-particle, and the excitation
probability of the daughter nucleus. Our calculation covers isotopic chains
from Hg to Fm in the mass regions 180$<$A$<$202 and A$\geq$224. The calculated
branching ratios of $\alpha$-transitions are consistent with the experimental
data. Some useful predictions are made for future experiments.


title:
Hadron Propagation in Medium: the Exclusive Process A(e,e'p)B in
  Few-Nucleon Systems

abstract:
  The mechanism of propagation of hadronic states in the medium is a key point
for understanding particle-nucleus and nucleus-nucleus scattering at high
energies. We have investigated the propagation of a baryon in the exclusive
process A(e,e'p)B in few-nucleon systems using realistic nuclear wave functions
and Glauber multiple scattering theory both in its original form and within a
generalized eikonal approximation. New results for the processes 3He(e,e'p)2H
and 4He(e,e'p)3H are compared with data recently obtained at the Thomas
Jefferson Laboratory (JLAB).


title:
Slow proton production in semi-inclusive DIS off nuclei: the role of
  final state interaction

abstract:
  The effects of the final state interaction on the production of slow protons
in semi-inclusive deep-inelastic lepton scattering off nuclei is considered
within the spectator mechanism and a realistic approach in which the
rescattering in the medium of both the recoiling proton and the hadronizing
nucleon debris are taken into account.


title: A realistic model of superfluidity in the neutron star inner crust

abstract:
  A semi-microscopic self-consistent quantum approach developed recently to
describe the inner crust structure of neutron stars within the Wigner-Seitz
(WS) method with the explicit inclusion of neutron and proton pairing
correlations is further developed. In this approach, the generalized energy
functional is used which contains the anomalous term describing the pairing. It
is constructed by matching the realistic phenomenological functional by Fayans
et al. for describing the nuclear-type cluster in the center of the WS cell
with the one calculated microscopically for neutron matter. Previously the
anomalous part of the latter was calculated within the BCS approximation. In
this work corrections to the BCS theory which are known from the many-body
theory of pairing in neutron matter are included into the energy functional in
an approximate way. These modifications have a sizable influence on the
equilibrium configuration of the inner crust, i.e. on the proton charge Z and
the radius R_c of the WS cell. The effects are quite significant in the region
where the neutron pairing gap is larger.


title:
Fusion Hindrance and the Role of Shell Effects in the Superheavy Mass
  Region

abstract:
  We present the first attempt of the systematical investigation about the
effects of shell correction energy for dynamical processes, which include
fusion, fusion-fission and quasi-fission processes. In the superheavy mass
region, for the fusion process, the shell correction energy plays a very
important role and enhances the fusion probability, when the colliding partner
has strong shell structure. By analyzing the trajectory in the
three-dimensional coordinate space with a Langevin equation, we reveal the
mechanism of the enhancement of the fusion probability caused by shell effects.


title: Hadronization in cold nuclear matter

abstract:
  I review a recently proposed scaling analysis of hadron suppression in Deeply
Inelastic Scattering on nuclear targets measured at the HERMES experiment. The
analysis can distinguish 2 competing explanations for the observed suppression,
namely, quark radiative energy loss with long hadron formation times, and
prehadron nuclear absorption with hadronization starting inside the nucleus.
Experimental data are shown to favor short formation times and prehadron
absorption.


title:
Pre-scission neutron multiplicity associated with the dynamical process
  in superheavy mass region

abstract:
  The fusion-fission process accompanied by neutron emission is studied in the
superheavy-mass region on the basis of the fluctuation-dissipation model
combined with a statistical model. The calculation of the trajectory or the
shape evolution in the deformation space of the nucleus with neutron emission
is performed. Each process (quasi-fission, fusion-fission, and deep
quasi-fission processes) has a characteristic travelling time from the point of
contact of colliding nuclei to the scission point. These dynamical aspects of
the whole process are discussed in terms of the pre-scission neutron
multiplicity, which depends on the time spent on each process. We have
presented the details of the characteristics of our model calculation in the
reactions $^{48}$Ca+$^{208}$Pb and $^{48}$Ca+$^{244}$Pu, and shown how the
structure of the distribution of pre-scission neutron multiplicity depends on
the incident energy.


title:
Temperature effects on the nuclear symmetry energy and symmetry free
  energy with an isospin and momentum dependent interaction

abstract:
  Within a self-consistent thermal model using an isospin and momentum
dependent interaction (MDI) constrained by the isospin diffusion data in
heavy-ion collisions, we investigate the temperature dependence of the symmetry
energy $E_{sym}(\rho, T)$ and symmetry free energy $F_{sym}(\rho, T) $ for hot,
isospin asymmetric nuclear matter. It is shown that the symmetry energy
$E_{sym}(\rho, T)$ generally decreases with increasing temperature while the
symmetry free energy $F_{sym}(\rho, T)$ exhibits opposite temperature
dependence. The decrement of the symmetry energy with temperature is
essentially due to the decrement of the potential energy part of the symmetry
energy with temperature. The difference between the symmetry energy and
symmetry free energy is found to be quite small around the saturation density
of nuclear matter. While at very low densities, they differ significantly from
each other. In comparison with the experimental data of temperature dependent
symmetry energy extracted from the isotopic scaling analysis of intermediate
mass fragments (IMF's) in heavy-ion collisions, the resulting density and
temperature dependent symmetry energy $E_{sym}(\rho, T) $ is then used to
estimate the average freeze-out density of the IMF's.used to estimate the
average freeze-out density of the IMF's.


title:
Multifragmentation and the symmetry term of the nuclear equation of
  state

abstract:
  We investigate the possibility to extract the symmetry energy from
multifragmentation data. The applicability of the grandcanonical formula
earlier proposed by Ono {\it et al.} [Phys. Rev. C {\bf 68}, 051601(R)] in the
case of finite excited nuclei is tested within a microcanonical framework.
Relatively good results are obtained except for large residual nuclei,
especially when large sources are highly excited. Effects of secondary particle
emission and the extent in which relevant information may be inferred from
experimental observables are finally discussed.


title:
On the renormalization of the one-pion exchange potential and the
  consistency of Weinberg's power counting

abstract:
  Nogga, Timmermans and van Kolck recently argued that Weinberg's power
counting in the few-nucleon sector is inconsistent and requires modifications.
Their argument is based on the observed cutoff dependence of the
nucleon-nucleon scattering amplitude calculated by solving the
Lippmann-Schwinger equation with the regularized one-pion exchange potential
and the cutoff Lambda varied in the range Lambda = 2...20 fm^(-1). In this
paper we discuss the role the cutoff plays in the application of chiral
effective field theory to the two-nucleon system and study carefully the
cutoff-dependence of phase shifts and observables based on the one-pion
exchange potential. We show that (i) there is no need to use the momentum-space
cutoff larger than Lambda ~ 3 fm^(-1); (ii) the neutron-proton low-energy data
show no evidence for an inconsistency of Weinberg's power counting if one uses
Lambda ~ 3 fm^{-1}.


title: Away-side azimuthal distribution in a Markovian parton scattering model

abstract:
  An event generator is constructed on the basis of a model of multiple
scattering of partons so that the trajectory of a parton traversing a dense and
expanding medium can be tracked. The parameters in the code are adjusted to fit
the \Delta\phi azimuthal distribution on the far side when the trigger momentum
is in the non-perturbative region, p_T(trigger)<4 GeV/c. The dip-bump structure
for 1<p_T(assoc)<2.5 GeV/c is reproduced by averaging over the exit tracks of
deflected jets. An essential characteristic of the model, called Markovian
Parton Scattering (MPS) model, is that the scattering angle is randomly
selected in the forward cone at every step of a trajectory that is divided into
many discrete steps in a semi-classical approximation of the non-perturbative
scattering process. Energy loss to the medium is converted to thermal partons
which hadronize by recombination to give rise to the pedestal under the bumps.
When extended to high trigger momentum with \pt(trigger) >8 GeV/c, the model
reproduces the single-peak structure observed by STAR without invoking any new
dynamical mechanism.


title:
Nuclear collective excitations using correlated realistic interactions:
  the role of explicit RPA correlations

abstract:
  We examine to which extent correlated realistic nucleon-nucleon interactions,
derived within the Unitary Correlation Operator Method (UCOM), can describe
nuclear collective motion in the framework of first-order random-phase
approximation (RPA). To this end we employ the correlated Argonne V18
interaction in calculations within the so-called "Extended" RPA (ERPA) and
investigate the response of closed-shell nuclei. The ERPA is a renormalized RPA
version which considers explicitly the depletion of the Fermi sea due to
long-range correlations and thus allows us to examine how these affect the
excitation spectra. It is found that the effect on the properties of giant
resonances is rather small. Compared to the standard RPA, where excitations are
built on top of the uncorrelated Hartree-Fock (HF) ground state, their centroid
energies decrease by up to 1 MeV, approximately, in the isovector channel. The
isoscalar response is less affected in general. Thus, the disagreement between
our previous UCOM-based RPA calculations and the experimental data are to be
attributed to other effects, mainly to a residual three-body force and
higher-order configurations. Ground-state properties obtained within the ERPA
are compared with corresponding HF and perturbation-theory results and are
discussed as well. The ERPA formalism is presented in detail.


title:
The symmetry energy at subnuclear densities and nuclei in neutron star
  crusts

abstract:
  We examine how the properties of inhomogeneous nuclear matter at subnuclear
densities depend on the density dependence of the symmetry energy. Using a
macroscopic nuclear model we calculate the size and shape of nuclei in neutron
star matter at zero temperature in a way dependent on the density dependence of
the symmetry energy. We find that for smaller symmetry energy at subnuclear
densities, corresponding to larger density symmetry coefficient L, the charge
number of nuclei is smaller, and the critical density at which matter with
nuclei or bubbles becomes uniform is lower. The decrease in the charge number
is associated with the dependence of the surface tension on the nuclear density
and the density of a sea of neutrons, while the decrease in the critical
density can be generally understood in terms of proton clustering instability
in uniform matter.


title:
The statistical hadronization model approach to $\sqrt{s_{NN}}=200$ GeV
  Au-Au collisions: $p_{T}$-spectra fits and global variable predictions

abstract:
  Three possible scenarios of the statistical hadronization model are
reexamined with the use of the $p_{T}$ spectra of the PHENIX and very low
$p_{T}$ PHOBOS measurements at $\sqrt{s_{NN}}=200$ GeV. These scenarios are:
(\textit{a}) full chemical non-equilibrium, (\textit{b}) strangeness chemical
non-equilibrium and (\textit{c}) chemical equilibrium. Fits to the spectra are
done within the Cracow single-freeze-out model, which takes into account both
the expansion and resonance decays. Predictions for spectra of $\phi$,
$K(892)^{\ast 0}$ and $\pi^{0}$ are also given. The global variables like the
transverse energy at midrapidity, the charged particle multiplicity at
midrapidity and the total multiplicity of charged particles are evaluated and
their predicted values agree qualitatively well with the experimental data. The
thorough analysis within this model suggests that the chemical full
non-equilibrium case is the least likely and both other cases are of the
similar likelihood. It is also shown that if the full chemical non-equilibrium
freeze-out took place it could manifest itself in the enhancement of the
$\pi^{0}$-production at very low transverse momenta.


title: Dynamical phase trajectories for relativistic nuclear collisions

abstract:
  Central collisions of gold nuclei are simulated by several existing models
and the central net baryon density rho and the energy density eps are extracted
at successive times, for beam kinetic energies of 5-40 GeV per nucleon. The
resulting trajectories in the (rho,eps) phase plane are discussed from the
perspective of experimentally exploring the expected first-order hadronization
phase transition with the planned FAIR at GSI or in a low-energy campaign at
RHIC.


title: Possibility of synthesizing doubly closed superheavy nucleus

abstract:
  The possibility of synthesizing a doubly magic superheavy nucleus,
$^{298}114_{184}$, is investigated on the basis of fluctuation-dissipation
dynamics. In order to synthesize this nucleus, we must generate more
neutron-rich compound nuclei because of the neutron emissions from excited
compound nuclei. The compound nucleus $^{304}114$ has two advantages to
achieving a high survival probability. First, because of small neutron
separation energy and rapid cooling, the shell correction energy recovers
quickly. Secondly, owing to neutron emissions, the neutron number of the
nucleus approaches that of the double closed shell and the nucleus obtains a
large fission barrier. Because of these two effects, the survival probability
of $^{304}114$ does not decrease until the excitation energy $E^{*}= 50$ MeV.
These properties lead to a rather high evaporation reside cross section.


title: Thermodynamic properties of nuclear matter at finite temperature

abstract:
  A self-consistent approach based on finite temperature Green's functions is
used to investigate thermodynamic properties of nuclear matter. The internal
energy is derived from the diagrams associated to the interaction energy.
Pressure and entropy up to T=20 MeV are obtained from the generating functional
form of the thermodynamic potential.


title:
Applications of Skyrme energy-density functional to fusion reactions for
  synthesis of superheavy nuclei

abstract:
  The Skyrme energy-density functional approach has been extended to study the
massive heavy-ion fusion reactions. Based on the potential barrier obtained and
the parameterized barrier distribution the fusion (capture) excitation
functions of a lot of heavy-ion fusion reactions are studied systematically.
The average deviations of fusion cross sections at energies near and above the
barriers from experimental data are less than 0.05 for 92% of 76 fusion
reactions with $Z_1Z_2<1200$. For the massive fusion reactions, for example,
the $^{238}$U-induced reactions and $^{48}$Ca+$^{208}$Pb the capture excitation
functions have been reproduced remarkable well. The influence of structure
effects in the reaction partners on the capture cross sections are studied with
our parameterized barrier distribution. Through comparing the reactions induced
by double-magic nucleus $^{48}$Ca and by $^{32}$S and $^{35}$Cl, the
'threshold-like' behavior in the capture excitation function for $^{48}$Ca
induced reactions is explored and an optimal balance between the capture cross
section and the excitation energy of the compound nucleus is studied. Finally,
the fusion reactions with $^{36}$S, $^{37}$Cl, $^{48}$Ca and $^{50}$Ti
bombarding on $^{248}$Cm, $^{247,249}$Bk, $^{250,252,254}$Cf and
$^{252,254}$Es, and as well as the reactions lead to the same compound nucleus
with Z=120 and N=182 are studied further. The calculation results for these
reactions are useful for searching for the optimal fusion configuration and
suitable incident energy in the synthesis of superheavy nuclei.


title: Chiral approach to antikaons in dense matter

abstract:
  Antikaons in dense nuclear matter are studied using a chiral unitary approach
which incorporates the $s$- and p-waves of the $\bar K N$ interaction. We
include, in a self-consistent way, Pauli blocking effects, meson self-energies
modified by nuclear short-range correlations and baryon binding potentials. We
show that the on-shell factorization cannot be applied to evaluate the
in-medium corrections to p-wave amplitudes. We also obtain an attractive shift
for the $\Lambda$ and $\Sigma$ masses of -30 MeV at saturation density while
the $\Sigma^*$ width gets sensibly increased to about 80 MeV. The moderate
attraction developed by the antikaon does not support the existence of very
deep and narrow bound states.


title: The hyperon neutron star mean field model

abstract:
  In this paper the impact of the strength of hyperon-nucleon and
hyperon-hyperon on the maximum neutron star mass is shown. The strong
hyperon-hyperon coupling constant together with the additional nonlinear meson
interaction terms lead to the essential softening of the equation of state and
to the existence of another more compact branch of stable neutron star
configurations. The analysis of the mass-radius relations leads to the
conclusion that the additional stable configurations of hyperon-rich neutron
stars are characterized by the reduced value of radii.


title: Pole Positions of the Delta(1232) Resonance

abstract:
  The phase shift of pion nucleon elastic scattering D33, corresponding to
isospin I=3/2 and angular momentum J=3/2, has been parameterized over the range
1100 < W < 1375 MeV, using the single channel p Pi+ data from CNS-DAC. By
employing our four parameters formula, the pole positions of corresponding to
the Delta(1232) resonance are then identified.


title: Fusion hindrance and roles of shell effects in superheavy mass region

abstract:
  We present the first attempt of systematically investigating the effects of
shell correction energy for a dynamical process, which includes fusion,
fusion-fission and quasi-fission processes. In the superheavy mass region, for
the fusion process, shell correction energy plays a very important role and
enhances the fusion probability when the colliding partner has a strong shell
structure. By analyzing the trajectory in three-dimensional coordinate space
with the Langevin equation, we reveal the mechanism of the enhancement of the
fusion probability caused by `cold fusion valleys'. The temperature dependence
of shell correction energy is considered.


title: The Nuclear Force Problem: Is the Never-Ending Story Coming to an End?

abstract:
  The attempts to find the right (underlying) theory for the nuclear force have
a long and stimulating history. Already in 1953, Hans Bethe stated that "more
man-hours have been given to this problem than to any other scientific question
in the history of mankind". In search for the nature of the nuclear force, the
idea of sub-nuclear particles was created which, eventually, generated the
field of particle physics. I will review this productive history of hope,
error, and desperation. Finally, I will discuss recent ideas which apply the
concept of an effective field theory to low-energy QCD. There are indications
that this concept may provide the right framework to properly understand
nuclear forces.


title: Gamma-soft Analog of the Confined Beta-soft Rotor Model

abstract:
  A gamma-soft analog of the confined beta-soft (CBS) rotor model is developed,
by using a gamma-independent displaced infinite well beta-potential in the Bohr
Hamiltonian, for which exact separation of variables is possible. Level schemes
interpolating between the E(5) critical point symmetry (with R(4/2)=E(4)/E(2)=
2.20) and the O(5) gamma-soft rotor (with R(4/2)=2.50) are obtained, exhibiting
a crossover of excited 0+ bandheads which leads to agreement with the general
trends of first excited 0+ states in this region and is observed experimentally
in 128-Xe and 130-Xe.


title: Nuclear symmetry energy effects on neutron stars properties

abstract:
  We construct a class of nuclear equations of state based on a schematic
potential model, that originates from the work of Prakash et. al.
\cite{Prakash-88}, which reproduce the results of most microscopic
calculations. The equations of state are used as input for solving the
Tolman-Oppenheimer-Volkov equations for corresponding neutron stars. The
potential part contribution of the symmetry energy to the total energy is
parameterized in a generalized form both for low and high values of the baryon
density. Special attention is devoted to the construction of the symmetry
energy in order to reproduce the results of most microscopic calculations of
dense nuclear matter. The obtained nuclear equations of state are applied for
the systematic study of the global properties of a neutron star (masses, radii
and composition). The calculated masses and radii of the neutron stars are
plotted as a function of the potential part parameters of the symmetry energy.
A linear relation between these parameters, the radius and the maximum mass of
the neutron star is obtained. In addition, a linear relation between the radius
and the derivative of the symmetry energy near the saturation density is found.
We also address on the problem of the existence of correlation between the
pressure near the saturation density and the radius.


title: Comparison of dynamical multifragmentation models

abstract:
  Multifragmentation scenarios, as predicted by antisymmetrized molecular
dynamics (AMD) or momentum-dependent stochastic mean-field (BGBD) calculations
are compared. While in the BGBD case fragment emission is clearly linked to the
spinodal decomposition mechanism, i.e. to mean-field instabilities, in AMD
many-body correlations have a stronger impact on the fragmentation dynamics and
clusters start to appear at earlier times. As a consequence, fragments are
formed on shorter time scales in AMD, on about equal footing of light particle
pre-equilibrium emission. Conversely, in BGBD pre-equilibrium and fragment
emissions happen on different time scales and are related to different
mechanisms.


title: Pion correlations in hydro-inspired models with resonances

abstract:
  The effects of the freeze-out hypersurface and resonance decays on the pion
correlation functions in relativistic heavy-ion collisions are studied with
help of the hydro-inspired models with single freeze-out. The heavy-ion
Monte-Carlo generator THERMINATOR is used to generate hadronic events
describing production of particles from a thermalized and expanding source. We
find that the short-lived resonances increase the pionic HBT radii by about 1
fm. We also find that the pion HBT data from RHIC are fully compatible with the
single freeze-out scenario provided a special choice of the freeze-out
hypersurface is made.


title:
NN scattering in higher derivative formulation of baryon chiral
  perturbation theory

abstract:
  We consider a new approach to the nucleon-nucleon scattering problem in the
framework of the higher-derivative formulation of baryon chiral perturbation
theory. Starting with a Lorentz-invariant form of the effective Lagrangian we
work out a new symmetry-preserving framework where the leading-order amplitude
is calculated by solving renormalizable equations and corrections are taken
into account perturbatively. Analogously to the KSW approach, the (leading)
renormalization scale dependence to any finite order is absorbed in the
redefinition of a finite number of parameters of the effective potential at
given order. On the other hand, analogously to Weinberg's power counting, the
one-pion-exchange potential is of leading order and is treated
non-perturbatively.


title:
Superscaling analysis of inclusive electron scattering and its extension
  to charge-changing neutrino-nucleus cross sections beyond the relativistic
  Fermi gas approach

abstract:
  Superscaling analyses of inclusive electron scattering from nuclei are
extended from the quasielastic processes to the delta excitation region. The
calculations of $(e,e^\prime)$ cross sections for the target nucleus $^{12}$C
at various incident electron energies are performed using scaling functions
$f(\psi^{\prime})$ obtained in approaches going beyond the mean-field
approximation, such as the coherent density fluctuation model (CDFM) and the
one based on the light-front dynamics (LFD) method. The results are compared
with those obtained using the relativistic Fermi gas (RFG) model and the
extended RFG model (ERFG). Our method utilizes in an equivalent way both basic
nuclear quantities, density and momentum distributions, showing their role for
the scaling and superscaling phenomena. The approach is extended to consider
scaling function for medium and heavy nuclei with $Z\neq N$ for which the
proton and neutron densities are not similar. The asymmetry of the CDFM
quasielastic scaling function is introduced, simulating in a phenomenological
way the effects which violate the symmetry for $\psi^{\prime}\geq 0$ including
the role of the final-state interaction (FSI). The superscaling properties of
the electron scattering are used to predict charge-changing neutrino-nucleus
cross sections at energies from 1 to 2 GeV. A comparison with the results of
the ERFG model is made. The analyses make it possible to gain information about
the nucleon correlation effects on both local density and nucleon momentum
distributions.


title: Superscaling in lepton-nucleus scattering

abstract:
  We suggest that superscaling analyses of few-GeV inclusive electron
scattering from nuclei, both in the quasielastic peak and in the region where
the $\Delta$-excitation dominates, allow one to make reliable predictions for
charge-changing neutrino reactions at energies of a few GeV, relevant for
neutrino oscillation experiments.


title: Variational Theory of Hot Nucleon Matter

abstract:
  We develop a variational theory of hot nuclear matter in neutron stars and
supernovae. It can also be used to study charged, hot nuclear matter which may
be produced in heavy-ion collisions. This theory is a generalization of the
variational theory of cold nuclear and neutron star matter based on realistic
models of nuclear forces and pair correlation operators. The present approach
uses microcanonical ensembles and the variational principle obeyed by the free
energy. In this paper we show that the correlated states of the microcanonical
ensemble at a given temperature $T$ and density $\rho$ can be orthonormalized
preserving their diagonal matrix elements of the Hamiltonian. This allows for
the minimization of the free energy without corrections from the
nonorthogonality of the correlated basis states, similar to that of the ground
state energy. Samples of the microcanonical ensemble can be used to study the
response, and the neutrino luminosities and opacities of hot matter. We present
methods to orthonormalize the correlated states that contribute to the response
of hot matter.


title: Hard Probes at LHC

abstract:
  This talk gives a theoretical perspective of the physics issues awaiting us
when heavy ions will collide in the LHC.


title: Cylindrically asymmetric hydrodynamic equations

abstract:
  We show that the boost-invariant and cylindrically asymmetric hydrodynamic
equations for baryon-free matter may be rewritten as only two coupled partial
differential equations. In the case where the system exhibits the cross-over
phase transition, the standard numerical methods may be applied to solve these
equations. An example of our results describing non-central gold on gold
collisions at RHIC energies is presented.


title: Covariant response theory beyond RPA and its application

abstract:
  The covariant particle-vibration coupling model within the time blocking
approximation is employed to supplement the Relativistic Random Phase
Approximation (RRPA) with coupling to collective vibrations. The Bethe-Salpeter
equation in the particle-hole channel with an energy dependent residual
particle-hole (p-h) interaction is formulated and solved in the shell-model
Dirac basis as well as in the momentum space. The same set of the coupling
constants generates the Dirac-Hartree single-particle spectrum, the static part
of the residual p-h interaction and the particle-phonon coupling amplitudes.
This approach is applied to quantitative description of damping phenomenon in
even-even spherical nuclei with closed shells $^{208}$Pb and $^{132}$Sn. Since
the phonon coupling enriches the RRPA spectrum with a multitude of
ph$\otimes$phonon states a noticeable fragmentation of giant monopole and
dipole resonances is obtained in the examined nuclei. The results are compared
with experimental data and with results of the non-relativistic approach.


title: Deciphering Deconfinement in Correlations of Conserved Charges

abstract:
  Diagonal and off-diagonal flavor and conserved charge susceptibilities reveal
the prevalent degrees of freedom of heated strongly interacting matter. Results
obtained from lattice simulations are compared with various model estimates in
an effort to weed down various possible pictures of a quark gluon plasma. We
argue that the vanishing of the off-diagonal quark flavor susceptibilities and
its derivatives with respect to chemical potential, at temperatures above
1.5Tc, can only be understood in a picture of a gas or liquid composed of
quasi-particles which carry the same quantum numbers as quarks and antiquarks.
A potential new observable, blind to neutral and non-strange particles, is
introduced and related via isospin symmetry to the ratio of susceptibilities of
baryonic strangeness to strangeness generated in the excited matter created at
RHIC.


title: Ising analogue to compact-star matter

abstract:
  By constructing an Ising analogue of compact-star matter at sub-saturation
density we explored the effect of Coulomb frustration on the nuclear liquid-gas
phase transition. Our conclusions is twofold. First, the range of temperatures
where inhomogeneous phases form expands with increasing Coulomb-field strength.
Second, within the approximation of uniform electron distribution, the limiting
point upon which the phase-coexistence region ends does not exhibit any
critical behaviour. Possible astrophysics consequences and thermodynamical
connections are discussed.


title:
The role of $qqqq\bar{q}$ components in the nucleon and the N(1440)
  resonance

abstract:
  The role of $q\bar q$ components in the nucleon and the N(1440) resonance is
studied by explicit coupling of the lowest positive parity $qqqq\bar q$ state
to the $qqq$ components in the harmonic oscillator quark model. The lowest
energy $qqqq\bar q$ component, where the 4-quark subsystem has the flavor-spin
symmetry $[4]_{FS}[22]_F[22]_S$, is close in energy to the lowest positive
parity excitation of the nucleon in the $qqq$ quark model. The confining
interaction leads to a strong mixing of the $qqqq\bar q$ system and the
positive parity excited state of the $qqq$ system. This result is in line with
the phenomenological indications for a two-component structure of the N(1440)
resonance. The presence of substantial $q\bar q$ components in the N(1440) can
bring about a reconciliation of the constituent quark model with the large
empirical decay width of the N(1440).


title: Phase Diagram of Neutron-Proton Condensate in Asymmetric Nuclear Matter

abstract:
  We investigate the phase structure of homogeneous and inhomogeneous
neutron-proton condensate in isospin asymmetric nuclear matter. At extremely
low nuclear density the condensed matter is in homogeneous phase at any
temperature, while in general case it is in Larkin-Ovchinnikov-Fulde -Ferrell
phase at low temperature. In comparison with the homogeneous superfluid, the
inhomogeneous superfluid can survive at higher nuclear density and higher
isospin asymmetry.


title: Hadronization of Dense Partonic Matter

abstract:
  The parton recombination model has turned out to be a valuable tool to
describe hadronization in high energy heavy ion collisions. I review the model
and revisit recent progress in our understanding of hadron correlations. I also
discuss higher Fock states in the hadrons, possible violations of the elliptic
flow scaling and recombination effects in more dilute systems.


title: Modern compact star observations and the quark matter equation of state

abstract:
  We present a hybrid equation of state (EoS) for dense matter that satisfies
phenomenological constraints from modern compact star (CS) observations which
indicate high maximum masses (M = 2 M_sun) and large radii (R> 12 km). The
corresponding isospin symmetric EoS is consistent with flow data analyses of
heavy-ion collisions and a deconfinement transition at approx. 0.55 fm^{-3}.
The quark matter phase is described by a 3-flavor Nambu--Jona-Lasinio model
that accounts for scalar diquark condensation and vector meson interactions
while the nuclear matter phase is obtained within the
Dirac-Brueckner-Hartree-Fock (DBHF) approach using the Bonn-A potential. We
demonstrate that both pure neutron stars and neutron stars with quark matter
cores (QCSs) are consistent with modern CS observations. Hybrid star
configurations with a CFL quark core are unstable.


title: Pad\'e expansion and the renormalization of nucleon-nucleon scattering

abstract:
  The importance of imposing physical boundary conditions on the $T$-matrix to
remove the nonperturbative renormalization prescription dependence is stressed
and demonstrated in two diagonal channels, $^1P_1$ and $^1D_2$, with the help
of Pad\'e expansion.


title:
Global variables for various centralities at RHIC: a Cracow model
  approach

abstract:
  The final $p_{T}$-spectra measured at RHIC at $\sqrt{s_{NN}}=130$ and 200 GeV
are fitted within the Cracow single-freeze-out model. Then the global variables
like the transverse energy at midrapidity, the charged particle multiplicity at
midrapidity and the total multiplicity of charged particles are evaluated. The
predictions agree fairly well with the experimental data. The centrality
independence of the total number of charged particles per participant pair has
been also reproduced.


title:
A critical analysis on deeply bound kaonic states in nuclei and the KEK
  experiment

abstract:
  We critically discuss the theoretical developments that led to predictions of
very deeply bound kaon states and then revise the data of the KEK experiment
from where claims for evidence of deeply bound kaon atoms in nuclei were made.
We conclude that the peaks seen in the experiment correspond to the absorption
of kaons by a pair of nucleons leading to $\Sigma p$ and $\Lambda p$ and
leaving the daughter nucleus as a spectator. These conclusions have been
reconfirmed by a recent experiment at FINUDA.


title:
Dynamical deformation effects in subbarrier fusion of
  $^{64}$Ni+$^{132}$Sn

abstract:
  We show that dynamical deformation effects play an important role in fusion
reactions involving the $^{64}$Ni nucleus, in particular the
$^{64}$Ni+$^{132}$Sn system. We calculate fully microscopic interaction
potentials and the corresponding subbarrier fusion cross sections.


title: P- and T-violating $\pi N N$ form factor

abstract:
  The form factor of the parity and time-reversal violating (PTV) pion-nucleon
interaction is calculated from one-loop vertex diagrams. The degrees of freedom
included in the effective lagrangian are nucleons, pions, $\eta$, $\rho$ and
$\omega$ mesons. We show that by studying the form factor one can constrain the
PTV meson-nucleon coupling constants. We evaluate the mean square radius
associated with the PTV $\pi N N$ vertex. Using the mean square radius, we
estimate the effect of the PTV $\pi N N$ vertex on the neutron electric dipole
moment, and find a very small correction. We also extract the renormalisation
group $\beta$ function and use it to discuss evolution of the PTV $\pi N N$
coupling constant beyond the hadronic mass scale.


title: Charge fluctuations and electric mass in a hot meson gas

abstract:
  Net-Charge fluctuations in a hadron gas are studied using an effective
hadronic interaction. The emphasis of this work is to investigate the
corrections of hadronic interactions to the charge fluctuations of a
non-interacting resonance gas. Several methods, such as loop, density and
virial expansions are employed. The calculations are also extended to SU(3) and
some resummation schemes are considered. Although the various corrections are
sizable individually, they cancel to a large extent. As a consequence we find
that charge fluctuations are rather well described by the free resonance gas.


title:
Shell model method for Gamow-Teller Transitions in heavy, deformed
  nuclei

abstract:
  A method for calculation of Gamow-Teller transition rates is developed by
using the concept of the Projected Shell Model (PSM). The shell model basis is
constructed by superimposing angular-momentum-projected multi-quasiparticle
configurations, and nuclear wave functions are obtained by digonalizing the
two-body interactions in these projected states. Calculation of transition
matrix elements in the PSM framework is discussed in detail, and the effects
caused by the Gamow-Teller residual forces and by configuration-mixing are
studied. With this method, it may become possible to perform a state-by-state
calculation for beta-decay and electron-capture rates in heavy, deformed nuclei
at finite temperatures. Our first example indicates that, while experimentally
known Gamow-Teller transition rates from the ground state of the parent nucleus
are reproduced, stronger transitions from some low-lying excited states are
predicted to occur, which may considerably enhance the total decay rates once
these nuclei are exposed to hot stellar environments.


title: Effective Theories of Dense and Very Dense Matter

abstract:
  In these lectures we discuss the uses of effective field theory in studying
dense hadronic matter. We focus on two regimes in the phase diagram. At low
baryon density nucleons can be described as non-relativistic point particles
interacting via short range forces. Interesting effects arise because of the
large nucleon-nucleon scattering length. At very large density QCD matter can
be described in terms of quarks and gluons. Unusual many body effects arise
because of long range gluons fields, and because of the way color and flavor
get entangled in the superconducting state.


title: Evolution of Nuclear Shell Structure due to the Pion Exchange Potential

abstract:
  The evolution of nuclear shell structure is investigated for the first time
within density-dependent relativistic Hartree-Fock theory and the role of
$\pi$-exchange potential is studied in detail. The energy differences between
the neutron orbits $\Lrb{\nu1h_{9/2},\nu 1i_{13/2}}$ in the N=82 isotones and
between the proton ones $\Lrb{\pi1g_{7/2},\pi1h_{11/2}}$ in the Z=50 isotopes
are extracted as a function of neutron excess $N-Z$. A kink around $Z = 58$ for
the N=82 isotones is found as an effect resulting from pion correlations. It is
shown that the inclusion of $\pi$-coupling plays a central role to provide
realistic isospin dependence of the energy differences. In particular, the
tensor part of the $\pi$-coupling has an important effect on the characteristic
isospin dependence observed in recent experiments.


title: Kaon photoproduction in a multipole approach

abstract:
  The recently published experimental data on K+Lambda photoproduction by the
SAPHIR, CLAS, and LEPS collaborations are analyzed by means of a multipole
approach. For this purpose the background amplitudes are constructed from
appropriate Feynman diagrams in a gauge-invariant and crossing-symmetric
fashion. The results of our calculation emphasize the lack of mutual
consistency between the SAPHIR and CLAS data previously found by several
independent research groups, whereas the LEPS data are found to be more
consistent with those of CLAS. The use of SAPHIR and CLAS data, individually or
simultaneously, leads to quite different resonance parameters which, therefore,
could lead to different conclusions on ``missing resonances''. Fitting to the
SAPHIR and LEPS data simultaneously indicates that the S_{11}(1650),
P_{13}(1720), D_{13}(1700), D_{13}(2080), F_{15}(1680), and F_{15}(2000)
resonances are required, while fitting to the combination of CLAS and LEPS data
leads alternatively to the P_{13}(1900), D_{13}(2080), D_{15}(1675),
F_{15}(1680), and F_{17}(1990) resonances. Although yielding different results
in most cases, both SAPHIR and CLAS data indicate that the second peak in the
cross sections at W = 1900 MeV originates from the D_{13}(2080) resonance with
a mass between 1911 - 1936 MeV. Furthermore, in contrast to the results of
currently available models and the Table of Particle Properties, both data sets
do not exhibit the need for a P_{11}(1710) resonance. The few data points
available for target asymmetry can not be described by the models proposed in
the present work.


title:
Parity-Violating Observables of Two-Nucleon Systems in Effective Field
  Theory

abstract:
  A newly-proposed parity-violating nucleon-nucleon interaction based on
effective field theory is studied in this work. It is found that at low energy,
i.e., E_lab less than 90 MeV for 1S0-3P0 transitions and E_lab less than 40 MeV
for 3S1-1P1 and 3S1-3P1 transitions, the parity-violating observables can be
completely specified by a minimal set of six parameters. It contains five
low-energy constants, which are equivalent to the Danilov parameters, and an
additional parameter that characterizes the long-range one-pion exchange and is
proportional to the parity-violating pion-nucleon coupling constant. Selected
observables in two-nucleons systems are analyzed in this framework with their
dependence on these parameters being expressed in a nearly model-independent
way.


title: Few Body Reserch - Summary

abstract:
  Few-body research history, achievements, current development and challenges
are presented.


title: Chiral Expansion, Renormalization and the Nuclear Force

abstract:
  The renormalization of singular chiral potentials as applied to NN scattering
and the structure of the deuteron is discussed. It is shown how zero range
theories may be implemented non-perturbatively as constrained from known long
range NN forces.


title: Isospin Dynamics in Heavy Ion Collisions: EoS-sensitive Observables

abstract:
  Heavy Ion Collisions (HIC) represent a unique tool to probe the in-medium
nuclear interaction in regions away from saturation and at high nucleon
momenta. In this report we present a selection of reaction observables
particularly sensitive to the isovector part of the interaction, i.e. to the
symmetry term of the nuclear Equation of State (EoS) At low energies the
behavior of the symmetry energy around saturation influences dissipation and
fragment production mechanisms. Predictions are shown for deep-inelastic and
fragmentation collisions induced by neutron rich projectiles. Differential flow
measurements will also shed lights on the controversial neutron/proton
effective mass splitting in asymmetric matter. The high density symmetry term
can be derived from isospin effects on heavy ion reactions at relativistic
energies (few AGeV range), that can even allow a ``direct'' study of the
covariant structure of the isovector interaction in the hadron medium. Rather
sensitive observables are proposed from collective flows and from pion/kaon
production. The possibility of the transition to a mixed hadron-quark phase, at
high baryon and isospin density, is finally suggested. Some signatures could
come from an expected ``neutron trapping'' effect.


title:
Reply to 'Comment on: 'Non-perturbative finite T broadening of the rho
  meson and dilepton emission in heavy ion-collisions''

abstract:
  Nota bene: the numerical calculation underlying Version 1 of this reply and
the original work Phys.Rev. C71:064903,2005 contains a basic numerical error
(wrong factor in the self-energy formulas of Phys. Rev.C71:064903,2005). This
renders the numerical results presented there and in Version 1 of the reply
invalid and enforces a careful reinvestigation of Phys. Rev.C71:064903,2005 and
the reply. Calculations for an erratum of Phys. Rev. C71:064903,2005 are in
progress.


title:
What does the rho-meson do? In-medium mass shift scenarios versus
  hadronic model calculations

abstract:
  The NA60 experiment has studied low-mass muon pair production in In-In
collisions at $158 {\rm AGeV}$ with unprecedented precision. With these results
there is hope that the in-medium modifications of the vector meson spectral
function can be constrained more thoroughly than before. We investigate in
particular what can be learned about collisional broadening by a hot and dense
medium and what constrains the experimental results put on in-medium mass shift
scenarios. The data show a clear indication of considerable in-medium
broadening effects but disfavor mass shift scenarios where the $\rho$-meson
mass scales with the square root of the chiral condensate. Scaling scenarios
which predict at finite density a dropping of the $\rho$-meson mass that is
stronger than that of the quark condensate are clearly ruled out since they are
also accompanied by a sharpening of the spectral function.


title: Density-functional theory for the pairing Hamiltonian

abstract:
  We consider the pairing Hamiltonian and systematically construct its density
functional in the strong-coupling limit and in the limit of large particle
number. In the former limit, the functional is an expansion into central
moments of occupation numbers. In the latter limit, the functional is known
from BCS theory. Both functionals are nonlocal in structure, and the
nonlocalities are in the form of simple products of local functionals. We also
derive the relation between the occupation numbers and the Kohn-Sham density.


title:
Angular Momentum Dependent Quark Potential of QCD Traits and Dynamical
  O(4) Symmetry

abstract:
  A common quark potential that captures the essential traits of the QCD
quark-gluon dynamics is expected to (i) interpolate between a Coulomb-like
potential (associated with one-gluon exchange) and the infinite wall potential
(associated with trapped but asymptotically free quarks), (ii) reproduce in the
intermediary region the linear confinement potential (associated with
multi-gluon self-interactions) as established by lattice QCD calculations of
hadron properties. We first show that the exactly soluble trigonometric
Rosen-Morse potential possesses all these properties. Next we observe that this
potential, once interpreted as angular momentum dependent, acquires a dynamical
O(4) symmetry and reproduces exactly quantum numbers and level splittings of
the non-strange baryon spectra in the SU(2)_I* O(4) classification scheme
according to which baryons cling on to multi-spin parity clusters of the type
(K/2,K/2)*[(1/2,0) + (0, 1/2)], whose relativistic image is
\psi_{\mu_{1}...\mu_{K}}. Finally, we bring exact energies and wave functions
of the levels within the above potential and thus put it on equal algebraic
footing with such common potentials of wide spread as are the
harmonic-oscillator- and the Coulomb potentials.


title:
Quantization of Differences Between Atomic and Nuclear Rest Masses and
  Selforganization of Atoms and Nuclei

abstract:
  We come to the conclusion that all atomic models based on either the Newton
equation and the Kepler laws, or the Maxwell equations, or the Schrodinger and
Dirac equations are in reasonable agreement with experimental data. We can only
suspect that these equations are grounded on the same fundamental principle(s)
which is (are) not known or these equations can be transformed into each other.
We proposed a new mechanism of LENR: cooperative processes in the whole system
- nuclei+atoms+condensed matter - nuclear reactions in plasma - can occur at
smaller threshold energies than the corresponding ones on free constituents. We
were able to quantize phenomenologically the first time the differences between
atomic and nuclear rest masses by the formula (in MeV/$c^{2}$) $\Delta
M=\frac{n_{1}}{n_{2}}*0.0076294, n_{i}=1,2,3,...$ Note that this quantization
rule is justified for atoms and nuclei with different $A, N$ and $Z$ and the
nuclei and atoms represent a coherent synchronized systems - a complex of
coupled oscillators (resonators). The cooperative resonance synchronization
mechanisms are responsible for explanation of how the electron volt world can
influence the nuclear mega electron volt world. It means that we created new
possibilities for inducing and controlling nuclear reactions by atomic
processes.


title: Predictiveness of Effective Field Theory in Nuclear Physics

abstract:
  We discuss the role effective field theory plays in making predictions in
nuclear physics in an approach that combines both the high sophistication of
the standard nuclear many-body approach and the power of systematic higher
chiral-order account in chiral perturbation theory. The main idea of this
approach is illustrated with a selected number of cases involving few-body
systems, the measurement of some of which poses an experimental challenge and
will be of value to solar neutrino studies.


title:
Near-barrier Fusion and Breakup/Transfer induced by Weakly Bound and
  Exotic Halo Nuclei

abstract:
  The influence on the fusion process of coupling to collective degrees of
freedom has been explored. The significant enhancement of the fusion cross
section at sub-barrier energies was compared to predictions of one-dimensional
barrier penetration models. This was understood in terms of the dynamical
processes arising from strong couplings to collective inelastic excitations of
the target and projectile. However, in the case of reactions where at least one
of the colliding nuclei has a sufficiently low binding energy, for breakup to
become an important process, conflicting model predictions and experimental
results have been reported in the literature. Excitation functions for sub- and
near-barrier total (complete + incomplete) fusion cross sections have been
measured for the $^{6,7}$Li+$^{59}$Co reactions. Elastic scattering as well as
breakup/transfer yields have also been measured at several incident energies.
Results of Continuum-Discretized Coupled-Channel ({\sc Cdcc}) calculations
describe reasonably well the experimental data for both reactions at and above
the barrier. A systematic study of $^{4,6}$He induced fusion reactions with a
three-body {\sc Cdcc} method is presented. The relative importance of breakup
and bound-state structure effects on total fusion (excitation functions) is
particularly investigated. The four-body {\sc Cdcc} model is being currently
developed.


title:
Recent astrophysical and accelerator based results on the Hadronic
  Equation of State

abstract:
  In astrophysics as well as in hadron physics progress has recently been made
on the determination of the hadronic equation of state (EOS) of compressed
matter. The results are contradictory, however. Simulations of heavy ion
reactions are now sufficiently robust to predict the stiffness of the (EOS)
from (i) the energy dependence of the ratio of $K^+$ from Au+Au and C+C
collisions and (ii) the centrality dependence of the $K^+$ multiplicities. The
data are best described with a compressibility coefficient at normal nuclear
matter density $\kappa$ around 200 MeV, a value which is usually called
``soft'' The recent observation of a neutron star with a mass of twice the
solar mass is only compatible with theoretical predictions if the EOS is stiff.
We review the present situation.


title: Three-Body Elastic and Inelastic Scattering at Intermediate Energies

abstract:
  The Faddeev equation for three-body scattering at arbitrary energies is
formulated in momentum space and directly solved in terms of momentum vectors
without employing a partial wave decomposition. For identical bosons this
results in a three-dimensional integral equation in five variables, magnitudes
of relative momenta and angles. The cross sections for both elastic and breakup
processes in the intermediate energy range up to about 1 GeV are calculated
based on a Malfliet-Tjon type potential, and the convergence of the multiple
scattering series is investigated.


title: Thermodynamics of compact-star matter within an ising approach

abstract:
  In the formation and evolution of compact stars, nuclear matter explores high
thermal excursions and is the site of intense neutrino emission. Neutrino
transport as well as structural properties of this matter depend on the
presence of inhomogeneous phases (named "pasta" phases), which are the result
of Coulomb frustration of the Liquid-Gas phase transition. We take into account
charge fluctuations by employing a frustrated lattice-gas model to which we
impose a neutrality constraint by the addition of an homogeneous background of
charge, representing delocalised electrons. Within this schematic model we
highlight a generaic feature of the phase-transition phenomenology: the
temperature interval where pasta phases are formed is enhanced by
Coulomb-frustration effects. This result is at variance with the behaviour of
frustrated ferromagnetic systems as well as hot nuclei and mean-field
approaches. Moreover, the region of phase coexistence is not found to end upon
a critical point, indicating that no critical opalescence can occur in
compact-star matter.


title:
e+e- pair production in ultrarelativistic heavy-ion collisions at
  intermediate impact parameters

abstract:
  Using the quasiclassical Green's function in the Coulomb field, we analyze
the probabilities of single and multiple $e^+e^-$-pair production at fixed
impact parameter $b$ between colliding ultrarelativistic heavy nuclei. We
perform calculations in the Born approximation with respect to the parameter
$Z_B\alpha$, and exactly in $Z_A\alpha$, $Z_{A}$ and $Z_{B}$ are the charge
numbers of the corresponding nuclei. We also obtain the approximate formulas
for the probabilities valid for $Z_A\alpha, Z_B\alpha\lesssim 1$.


title:
The $qqqq\bar q$ components and hidden flavor contributions to the
  baryon magnetic moments

abstract:
  The contributions from the $qqqq\bar q$ components to the magnetic moments of
the octet as well as the $\Delta^{++}$ and $\Omega^-$ decuplet baryons are
calculated for the configurations that are expected to have the lowest energy
if the hyperfine interaction depends both on spin and flavor. The contributions
from the $u\bar u$, $d\bar d$ and $s\bar s$ components are given separately. It
is shown that addition of $qqqq\bar q$ admixtures to the ground state baryons
can improve the overall description of the magnetic moments of the baryon octet
and decuplet in the quark model without SU(3) flavor symmetry breaking, beyond
that of the different constituent masses of the strange and light-flavor
quarks. The explicit flavor (and spin) wave functions for all the possible
configurations of the $qqqq\bar q$ components with light and strange $q\bar q$
pairs are given for the baryon and octet and decuplet. Admixtures of ~ 10% of
the $qqqq\bar q$ configuration where the flavor-spin symmetry is
$[4]_{FS}[22]_F[22]_S$, which is likely to have the lowest energy, in
particular reduces the deviation from the empirical values of the magnetic
moments of the $\Sigma^ -$ and the $\Xi^0$ compared with the quark model.


title: Form Factors of Dimesoatoms for Discrete-Continuum Transitions

abstract:
  An approach for calculation of transition form factors of hydrogen-like
elementary atoms (EA) is proposed. A general formula for bound-continuous
transition form factors of EA is derived. It is shown that these form factors
can be represented in the form of finite sum of terms with simple analytical
structure and may be numerically evaluated with arbitrary degree of accuracy.
As an application of the presented form factors, the calculation of the spectra
of products from EA ionization is considered.


title: Recent progress in eta-nucleus physics

abstract:
  This is the summary of the 'International Workshop on eta--Nucleus Physics'
held in Juelich, May 8--12, 2006. Each talk is represented by an extended
abstract. At the same time the document provides a progress report of the
corresponding working group.


title: Isospin symmetry in mirror $\alpha$-decays

abstract:
  We show that a consequence of isospin symmetry, recently discovered in mirror
conjugated one-nucleon decays, can be extended to mirror-conjugated
$\alpha$-particles decays, both virtual and real. For virtual $\alpha$-decays
of bound mirror pairs this symmetry manifests itself as a relation between the
Asymptotic Normalization Coefficients (ANCs) of $\alpha$-particle overlap
integrals. This relation is given by a simple analytical formula which involves
$\alpha$-particle separation energies and charges of residual nuclei. For
bound-unbound mirror pairs, the ANC of a bound nucleus is related to the
$\alpha$-width of the mirror unbound level. For unbound mirror pairs we get a
new analytical formula that relates the widths of mirror resonances. We test
the validity of these analytical formuli against the predictions of a two-body
potential and of a many-body microscopic cluster model for several mirror
states in $^7$Li-$^7$Be, $^{11}$B-$^{11}$C and $^{19}$F-$^{19}$Ne isotopes. We
show that these analytical formulae are valid in many cases but that some
deviations can be expected for isotopes with strongly deformed and easily
excited cores. In general, the results from microscopic model are not very
sensitive to model assumptions and can be used to predict unknown
astrophysically relevant cross sections using known information about mirror
systems.


title: Nucleosynthesis in neutron-rich ejecta from quark-novae

abstract:
  We explore heavy-element nucleosynthesis by rapid neutron capture (r-process)
in the decompressing ejecta from the surface of a neutron star. The
decompression is triggered by a violent phase transition to strange quark
matter (quark-nova scenario). The presence of neutron-rich large Z nuclei
(40,95) < (Z,A) < (70,177), the large neutron-to-seed ratio, and the low
electron fraction Ye ~ 0.03 in the decompressing ejecta present favorable
conditions for the r-process. We perform network calculations that are adapted
to the quark-nova conditions, and which mimic usual (n-gamma) equilibrium
r-process calculations during the initially cold decompression phase. They
match to dynamical r-process calculations at densities below neutron drip
(4.10^11 g cm-3). We present results for the final element abundance
distribution with and without heating from nuclear reactions, and compare to
the solar abundance pattern of r-process elements. We highlight the
distinguishing features of quark-novae by contrasting it with conventional
nucleosynthetic sites such as type II supernovae and neutron star mergers,
especially in the context of heavy-element compositions of extremely
metal-deficient stars.


title: Elliptic flow of thermal photons and dileptons

abstract:
  In this talk we describe the recently discovered rich phenomenology of
elliptic flow of electromagnetic probes of the hot matter created in
relativistic heavy-ion collisions. Using a hydrodynamic model for the
space-time dynamics of the collision fireball created in Au+Au collisions at
RHIC, we compute the transverse momentum spectra and elliptic flow of thermal
photons and dileptons. These observables are shown to provide differential
windows into various stages of the fireball expansion.


title: Repulsive force by vector mesons and quark-hadron phase transition

abstract:
  Using a phenomenological model with vector-type interactions, we discuss a
role of repulsive force in the quark-hadron phase transition at high density.
For realization of the quark phase at high density, strong vector coupling is
needed in the hadron phase, while it is forbidden in the quark phase. For the
quark-phase, a NJL-type model with a multi-quark interaction is investigated.
We show that, in this model, the restoration of chiral symmetry decreases
effective vector coupling and the quark phase is realized at high density, even
if we have strong vector coupling at low density. In this model, the strong
coupling in the hadron phase is induced by the chiral symmetry breaking.


title:
Search for missing baryon resonances via associated strangeness
  photoproduction

abstract:
  Differential cross-section and single polarization observables in the process
gamma p --> K^+ Lambda are investigated within a constituent quark model and a
dynamical coupled-channel formalism. The effects of two new nucleon resonances
and of the K*(892)- and K1(1270)-exchanges are briefly presented.


title: Effective interactions and shell model studies of heavy tin isotopes

abstract:
  We present results from large-scale shell-model calculations of even and odd
tin isotopes from 134Sn to 142}Sn with a shell-model space defined by the
1f7/2,2p3/2,0h9/2,2p1/2,1f5/2,0i13/2 single-particle orbits. An effective
two-body interaction based on modern nucleon-nucleon interactions is employed.
The shell-model results are in turn analyzed for their pairing content using a
generalized seniority approach. Our results indicate that a pairing-model
picture captures a great deal of the structure and the correlations of the
lowest lying states for even and odd isotopes.


title:
Heavy-ion collisions described by a new QMD code interfaced to FLUKA:
  model validation by comparisons with experimental data concerning neutron and
  charged fragment production

abstract:
  A new code, based on the Quantum Molecular Dynamics theoretical approach, has
been developed and interfaced to the FLUKA evaporation/fission/Fermi break-up
module. At present, this code is undergoing a series of validation tests. In
this paper its predictions are compared to measured charged fragment yields and
double differential neutron spectra in thin target heavy-ion reactions, at
bombarding energies of about 100 MeV/A. The comparisons with the predictions of
a modified version of RQMD 2.4 originally developed in Frankfurt, already
available in the FLUKA code, are presented and potential improvements are
briefly sketched.


title:
Four-body structure of $^7_{\Lambda}$Li and $\Lambda N$ spin-dependent
  interaction

abstract:
  Two spin-doublet states of %$3/2^+$-$1/2^+$ and $7/2^+$-$5/2^+$ in
$^7_{\Lambda}$Li are studied on the basis of the $\alpha +\Lambda +n+p$
four-body model. We employ the two-body interactions which reproduce the
observed properties of any subsystems composed of $\alpha N$, $\alpha \Lambda$
and $\alpha NN$, and $\alpha \Lambda N$. Furthermore, the $\Lambda N$
interaction is adjusted so as to reproduce the $0^+$-$1^+$ splitting of in
$^4_{\Lambda}$H. The calculated energy splittings of $3/2^+$-$1/2^+$ and
$7/2^+$-$5/2^+$ states in $^7_{\Lambda}$Li are 0.69 MeV and 0.46 MeV, which are
in good agreement with the resent observed data. The spin-dependent components
of the $\Lambda N$ interaction are discussed.


title:
Relations for Four Nucleons in a Single j Shell-using 9j Symbols to get
  rid of 9j Symbols

abstract:
  In a previous work we considered the number of pairs of particles with
angular momentum J12 for systems with angular momentum zero.Here we extend the
work to states of any total angular momentum.We find simplified relations
satisfied for a system of four nucleoons with isospin zero and two.


title:
Pseudorapidity shape of elliptic flow as signature for fast
  equilibration in relativistic heavy-ion collisions at energies up to sqrt(s)
  = 200 GeV

abstract:
  The implications of parton recombination processes on the dynamics of
ultrarelativistic heavy-ion reactions are investigated. To do so, the
quark-gluon string transport model has been extended for partonic recombination
and fusion processes. Parton recombination leads to short equilibration times
and improves significantly on the theoretical description of measured directed
and elliptic flow, i.e., v_1 and v_2, distributions in Au+Au collisions at
sqrt(s) = 200 GeV, in particular what concerns their pseudorapidity dependence.
The shape of v_2(eta) is found to be closely related to fast thermalization.


title: Faddeev calculation of a $K^- p p$ quasi-bound state

abstract:
  We report on the first genuinely three-body ${\bar K}NN - \pi \Sigma N$
coupled-channel Faddeev calculation in search for quasi-bound states in the
$K^- p p$ system. The main absorptivity in the $K^- p$ subsystem is accounted
for by fitting to $K^- p$ data near threshold. Our calculation yields one such
quasi-bound state, with $I=1/2$, $J^{\pi}=0^-$, bound in the range $B \sim
55-70$ MeV, with a width of $\Gamma \sim 95-110$ MeV. These results differ
substantially from previous estimates, and are at odds with the $K^- p p \to
\Lambda p$ signal observed by the FINUDA collaboration.


title:
Reply to comment ``On the test of the modified BCS at finite
  temperature''

abstract: This is our formal Reply to revised version (v2) of arXiv: nucl-th/0510004v2.


title: Overcoming Fragility

abstract:
  We examine the sensitivity and surface bias of convolved DGLV radiative and
elastic loss in a realistic geometry including Bjorken expansion. We find that
this more faithful treatment of the medium density is not a priori reproducible
via fixed length approximations, and neither the fragility nor the surface
emission of BDMPS-based models is seen.


title: Photonuclear sum rules and the tetrahedral configuration of $^4$He

abstract:
  Three well known photonuclear sum rules (SR), i.e. the Thomas-Reiche-Kuhn,
the bremsstrahlungs and the polarizability SR are calculated for 4He with the
realistic nucleon-nucleon potential Argonne V18 and the three-nucleon force
Urbana IX. The relation between these sum rules and the corresponding energy
weighted integrals of the cross section is discussed. Two additional
equivalences for the bremsstrahlungs SR are given, which connect it to the
proton-neutron and neutron-neutron distances. Using them, together with our
result for the bremsstrahlungs SR, we find a deviation from the tetrahedral
symmetry of the spatial configuration of 4He. The possibility to access this
deviation experimentally is discussed.


title: Analytic descriptions for transitional nuclei near the critical point

abstract:
  Exact solutions of the Bohr Hamiltonian with a five-dimensional square well
potential, in isolation or coupled to a fermion by the five-dimensional
spin-orbit interaction, are considered as examples of a new class of dynamical
symmetry or Bose-Fermi dynamical symmetry. The solutions provide baselines for
experimental studies of even-even [E(5)] and odd-mass [E(5|4)] nuclei near the
critical point of the spherical to deformed gamma-unstable phase transition.


title:
From energy-density functionals to mean field potentials: a systematic
  derivation

abstract:
  In this paper we present a systematic method to solve the variational problem
of the derivation of a self-consistent Kohn-Sham field from an arbitrary local
energy functional. We illustrate this formalism with an application in nuclear
physics and give the general mean field associated to the widely used Skyrme
effective interaction.


title:
Efficient matrix-vector products for large-scale nuclear Shell-Model
  calculations

abstract:
  A method to accelerate the matrix-vector products of j-scheme nuclear
Shell-Model Configuration Interaction (SMCI) calculations is presented. The
method takes advantage of the matrix product form of the j-scheme
proton-neutron Hamiltonian matrix. It is shown that the method can speed up
unrestricted large-scale pf-shell calculations by up to two orders of magnitude
compared to previously existing related j-scheme method. The new method allows
unrestricted SMCI calculations up to j-scheme dimension 10^10 to be made in
more complex model spaces.


title:
Effective field theory calculation of nd radiative capture at thermal
  energies

abstract:
  The cross section for the thermal neutron capture by the deuteron is
calculated with pionless Effective Field Theory(EFT). No new Three-Nucleon
forces are needed up to next-to-next-to-leading order in order to achieve
cut-off independent results, besides those fixed by the triton binding energy
and Nd scattering length in the triton channel. The cross-section is accurately
determined to be $\sigma_{tot}=[0.503\pm 0.003]mb$. At zero energies, the
magnetic $M1$-transition gives the dominant contribution and is calculated up
to next-to-next-to-leading order (N$^2$LO). Close agreement between the
available experimental data and the calculated cross section is reached. We
demonstrate convergence and cutoff independence order by order in the
low-energy expansion.


title: Alpha-decay lifetimes semiempirical relationship including shell effects

abstract:
  A new version of the semiempirical formula based on fission approach of alpha
decay is derived, by using the optimum values of the fitting parameters
determined for even-even nuclei, combined with hindrance factors for even-odd,
odd-even, and odd-odd nuclides. The deviations from experimental data for two
regions of nuclear chart (493 alpha emitters with Z=52-118 and 142 transuranium
nuclei including superheavies (Z=92-118), respectively) are compared with those
obtained by using the universal curve and the Viola-Seaborg semiempirical
relationship.


title:
$J/\psi$ production in Au+Au/Cu+Cu collisions at $\sqrt{s}_{NN}$=200 GeV
  and the threshold model

abstract:
  Using the QGP motivated threshold model, where all the $J/\psi$'s are
suppressed above a threshold density, we have analyzed the preliminary PHENIX
data on the centrality dependence of nuclear modification factor for $J/\psi$'s
in Cu+Cu and in Au+Au collisions, at RHIC energy, $\sqrt{s}_{NN}$=200 GeV.
Centrality dependence of $J/\psi$ suppression in Au+Au collisions are well
explained in the model for threshold densities in ranges of 3.6-3.7 $fm^{-2}$.
$J/\psi$ suppression in Cu+Cu collisions on the other hand are not explained in
the model.


title: Hadron spectrum and hadrons in the nuclear medium

abstract:
  Some recent developments in chiral dynamics of hadrons and hadrons in a
medium are presented. Unitary schemes based on chiral Lagrangians describe some
hadronic states as being dynamically generated resonances.
  We discuss how standard quantum many body techniques can be used to calculate
the properties of these dynamically generated and other hadrons in the nuclear
medium. We present some results for vector mesons ($\rho$ and $\phi$), scalar
mesons ($\sigma$, $\kappa$, $a_0(980)$, $f_0(980)$), the $\Lambda(1520)$ and
for the in-medium baryon-baryon interaction.


title: A study of neutron-deuteron scattering in configuration space

abstract:
  A new computational method for solving the configuration-space Faddeev
equations for the breakup scattering problem has been applied to nd scattering
both below and above the two-body threshold.


title: Renormalization group analysis of nuclear force

abstract:
  We study a relation between nuclear forces based on phenomenological approach
(V_ph) and nuclear effective field theory (V_EFT) from a viewpoint of
renormalization group. We find the relation between these two types of nuclear
force using Wilsonian renormalization group equation. Considering the fact that
V_EFT is defined in a certain small model space, we show that a simple contact
interaction accurately simulates short-distance physics, and that V_EFT is free
from dependence on modelling the details of the short-distance physics. Based
on our result, we discuss some features of nuclear effective field theory.


title:
Event-by-event fluctuations of transverse-momentum and multiparticle
  clusters in relativistic heavy-ion collisions

abstract:
  We analyze the event-by-event fluctuations of mean transverse-momentum
measured recently by the PHENIX and STAR Collaborations at RHIC. We argue that
the observed scaling of strength of dynamical fluctuations with the inverse
number of particles can be naturally explained by formation of multiparticle
clusters.


title:
The Spectator Electromagnetic Effect on Charged Pion Spectra in
  Peripheral Ultrarelativistic Heavy-Ion Collisions

abstract:
  We estimate the electromagnetic effect of the spectator charge on the
momentum spectra of $\pi^+$ and $\pi^-$ produced in peripheral Pb+Pb collisions
at SPS energies. We find that the effect is large and results in strongly
varying structures in the $x_F$ dependence of the $\pi^+/\pi^-$ ratio,
especially at low transverse momenta where a deep valley in the above ratio is
predicted at $x_F \sim$ 0.15 -- 0.20.
  It appears that the effect depends on initial conditions. Thus, it provides
new information on the space and time evolution of the non-perturbative pion
creation process.


title:
Microscopic three-body forces and kaon condensation in cold
  neutrino-trapped matter

abstract:
  We investigate the composition and the equation of state of the kaon
condensed phase in neutrino-free and neutrino-trapped star matter within the
framework of the Brueckner-Hartree-Fock approach with three-body forces. We
find that neutrino trapping shifts the onset density of kaon condensation to a
larger baryon density, and reduces considerably the kaon abundance. As a
consequence, when kaons are allowed, the equation of state of neutrino-trapped
star matter becomes stiffer than the one of neutrino free matter. The effects
of different three-body forces are compared and discussed. Neutrino trapping
turns out to weaken the role played by the symmetry energy in determining the
composition of stellar matter, and thus reduces the difference between the
results obtained by using different three-body forces.


title: The Nuclear Equation of State at high densities

abstract:
  Ab inito calculations for the nuclear many-body problem make predictions for
the density and isospin dependence of the nuclear equation-of-state (EOS) far
away from the saturation point of nuclear matter. I compare predictions from
microscopic and phenomenological approaches. Constraints on the EOS derived
from heavy ion reactions, in particular from subthreshold kaon production, as
well as constraints from neutron stars are discussed.


title:
Quantum fluctuations and stability of tetrahedral deformations in atomic
  nuclei

abstract:
  The possible existence of stable axial octupole and tetrahedral deformations
is investigated in $^{80}$Zr and $^{98}$Zr. HFBCS calculations with parity
projection have been performed for various parametrizations of the Skyrme
energy functional. The correlation and excitation energies of negative parity
states associated with shape fluctuations have been obtained using the
generator coordinate method (GCM). The results indicate that in these nuclei
both the axial octupole and tetrahedral deformations are of dynamic character
and possess similar characteristics. Various Skyrme forces give consistent
results as a function of these two octupole degrees of freedom both at the
mean-field level as well as for configuration mixing calculations.


title: Giant dipole resonance in deformed nuclei: dependence on Skyrme forces

abstract:
  The giant dipole resonance (GDR) in deformed nuclei is analyzed using the
self-consistent separable random-phase-approximation (SRPA) with Skyrme forces
SkT6, SkM$^*$, SLy6 and SkI3. The deformed nuclei $^{150}$Nd and $^{238}$U are
used as representative rare-earth and actinide samples. Dependencies of the
dipole strength distributions on some basic characteristics of the Skyrme
functional and nuclear matter properties (isoscalar and isovector effective
masses, time-odd contributions) are discussed. Particular attention is paid to
the fragmentation structure of the GDR strength which are shown to depend
sensitively to spin-orbit intruder states with large angular momentum.


title: Strangeness production time and the K+/pi+ horn

abstract:
  We construct a hadronic kinetic model which describes production of strange
particles in ultrarelativistic nuclear collisions in the energy domain of SPS.
We test this model on description of the sharp peak in the excitation function
of multiplicity ratio K+/pi+ and demonstrate that hadronic model reproduces
these data rather well. The model thus must be tested on other types of data in
order to verify the hypothesis that deconfinement sets in at lowest SPS
energies.


title:
Ultrarelativistic heavy-ion collisions: exploring the phase diagram of
  QCD

abstract:
  I present the motivation for studying nuclear collisions at ultrarelativistic
energies which is to map the phase diagram of strongly interacting matter under
very extreme conditions. The relevant experimental efforts are overviewed and
problems in connecting observables with physics of the hot and dense matter are
pointed out. I review the current highlights of the experimental programme:
excitation functions of various quantities from the SPS which suggest a
possibility of the onset of deconfinement, and the evidence of deconfined
perfect fluid at RHIC.


title: Intrinsic-Density Functionals

abstract:
  The Hohenberg-Kohn theorem and Kohn-Sham procedure are extended to
functionals of the localized intrinsic density of a self-bound system such as a
nucleus. After defining the intrinsic-density functional, we modify the usual
Kohn-Sham procedure slightly to evaluate the mean-field approximation to the
functional, and carefully describe the construction of the leading corrections
for a system of fermions in one dimension with a spin-degeneracy equal to the
number of particles N. Despite the fact that the corrections are complicated
and nonlocal, we are able to construct a local Skyrme-like intrinsic-density
functional that, while different from the exact functional, shares with it a
minimum value equal to the exact ground-state energy at the exact ground-state
intrinsic density, to next-to-leading order in 1/N. We briefly discuss
implications for real Skyrme functionals.


title: Probing in-medium vector mesons by dileptons at heavy-ion colliders

abstract:
  An introduction to physics of in-medium hadrons with special emphasis towards
modification of vector meson properties in dense nuclear matter is given. We
start from remarkable analogy between the in-medium behavior of atoms in gases
and hadrons in nuclear matter. Modifications of vector meson widths and masses
can be registered experimentally in heavy-ion collisions by detecting dilepton
spectra from decays of nucleon resonances and light unflavored mesons including
$\rho$- and $\omega$-mesons. Theoretical schemes for description of the
in-medium hadrons are reviewed and recent experimental results of the NA60 and
HADES collaborations on the dilepton production are discussed.


title: Two and Three Nucleon Forces

abstract:
  Chiral symmetry allows two and three nucleon forces to be treated in a single
theoretical framework. We discuss two new features of this research programme
at $\cO(q^4)$ and the consistency of the overall chiral picture.


title: Nucleon-Nucleon Potential: Drift Effects

abstract:
  In the rest frame of a many-body system, used in the calculation of its
static and scattering properties, the center of mass of a two-body subsystem is
allowed to drift. We show, in a model independent way, that drift corrections
to the nucleon-nucleon potential are relatively large and arise from both one-
and two-pion exchange processes. As far as chiral symmetry is concerned,
corrections to these processes begin respectively at $\cO(q^2)$ and $\cO(q^4)$.
The two-pion exchange interaction also yields a new spin structure, that
promotes the presence of $P$ waves in trinuclei and is associated with profile
functions which do not coincide with neither central nor spin-orbit ones. In
principle, the new spin terms should be smaller than the $\cO(q^3)$ spin-orbit
components. However, in the isospin even channel, a large contribution reverts
this expectation and gives rise to the prediction of important drift effects.


title:
Superfluid-normal phase transition in finite systems and its effect on
  damping of hot giant resonances

abstract:
  Thermal fluctuations of quasiparticle number are included making use of the
secondary Bogolyubov's transformation, which turns quasiparticles operators
into modified-quasiparticle ones. This restores the unitarity relation for the
generalized single-particle density operator, which is violated within the
Hartree-Fock-Bogolyubov (HFB) theory at finite temperature. The resulting
theory is called the modified HFB (MHFB) theory, whose limit of a constant
pairing interaction yields the modified BCS (MBCS) theory. Within the MBCS
theory, the pairing gap never collapses at finite temperature T as it does
within the BCS theory, but decreases monotonously with increasing T. It is
demonstrated that this non-vanishing thermal pairing is the reason why the
width of the giant dipole resonance (GDR) does not increase with T up to T
around 1 MeV. At higher T, when the thermal pairing is small, the GDR width
starts to increase with T. The calculations within the phonon-damping model
yield the results in good agreement with the most recent experimental
systematic for the GDR width as a function of T. A similar effect, which causes
a small GDR width at low T, is also seen after thermal pairing is included in
the thermal fluctuation model.


title: Deuteron radial moments for renormalized chiral potentials

abstract:
  We calculate deuteron positive and negative radial moments involving any
bilinear function of the deuteron S and D wave functions for renormalized OPE
and TPE chiral potentials. The role played by the strong singularities of the
potentials at the origin and the short distance insensitivity of the results
when the potentials are fully iterated is emphasized as compared to realistic
potentials.


title:
Neutron star matter in the quark-meson coupling model in strong magnetic
  fields

abstract:
  The effects of strong magnetic fields on neutron star matter are investigated
in the quark-meson coupling (QMC) model. The QMC model describes a nuclear
many-body system as nonoverlapping MIT bags in which quarks interact through
self-consistent exchange of scalar and vector mesons in the mean-field
approximation. The results of the QMC model are compared with those obtained in
a relativistic mean-field (RMF) model. It is found that quantitative
differences exist between the QMC and RMF models, while qualitative trends of
the magnetic field effects on the equation of state and composition of neutron
star matter are very similar.


title: A QMD description of the interaction of ion beams with matter

abstract:
  Heavy-ion collisions can be simulated by means of comprehensive approaches,
to include the many different reaction mechanisms which may contribute. QMD
models and their relativistic extensions are examples of these approaches based
on Monte Carlo techniques. In this paper are shown some results obtained by
coupling a new QMD code, which describes the fast stage of ion-ion collisions,
to the evaporation /fission/Fermi break-up and photon de-excitation routines
present in the FLUKA multipurpose Monte Carlo transport and interaction code.
In particular, we compare the predicted neutron spectra to available
experimental data from thin and thick target irradiations. We show also some
predictions of particle and charged fragment fluences for the interaction of C
and Fe ions with a thick PMMA target, which may be useful to assess the risk of
side-effects in the hadron therapy of tumours.


title: Di-hadron and Tri-hadron correlation and Mach-like cone structure

abstract:
  In a framework of a multi-phase transport model with both partonic and
hadronic interactions, azimuthal correlations between trigger particles and
associated scattering particles in Au + Au collisions at $\sqrt{s_{NN}}$ = 200
GeV/$c$ have been studied by the mixing-event technique. The Mach-like
structure has been observed in correlation function for central collisions. It
is shown that the Mach-like structure is basically born in the partonic process
and further developed in hadronic rescattering process. However, hadronic
rescattering alone cannot reproduce the amplitude of Mach-like cone on away
side, therefore partonic cascade process is necessary to describe the amplitude
of Mach-like cone on away side in experiment. In addition, three-particle
correlations have been investigated in central Au + Au collisions with the AMPT
model, and the results support the conclusion that partonic cascade processes
enhance the opening angle of Mach-like cone structures.


title: Electromagnetic Probes of Strongly Interacting Matter

abstract:
  Photons and dileptons are being used to probe the properties of nuclear and
quark-gluon matter at high energy densities. This is an area where theory and
experiment are driving each other to obtain solid results. However, it is
important to clearly separate the assumptions and conclusions concerning the
correlation and response functions of a system in thermal equilibrium from the
space-time dynamics used to model the evolution of the matter created in the
nuclear collision.


title: Two-pion exchange NN potential from Lorentz-invariant $\chi$EFT

abstract:
  We outline the progress made in the past five years by the S\~ao Paulo group
in the development of a two-pion exchange nucleon-nucleon potential within a
Lorentz-invariant framework of (baryon) chiral perturbation theory.