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The directed flow maximum near c_s=0
J. Brachmann, A. Dumitru, H. Stöcker +1
We investigate the excitation function of quark-gluon plasma formation and of directed in-plane flow of nucleons in the energy range of the BNL-AGS and for the E(Lab)=40AGeV Pb+Pb…
Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
M. Bleicher, E. Zabrodin, C. Spieles +8
Hadron-hadron collisions at high energies are investigated in the Ultra-relativistic-Quantum-Molecular-Dynamics approach (UrQMD). This microscopic transport model is designed to st…
Meson mass modification in strange hadronic matter
Subrata Pal, Song Gao, Horst Stöcker +1
We investigate in stable strange hadronic matter (SHM) the modification of the masses of the scalar (, ) and the vector (, ) mesons. The baryon ground state is treate…
Neutron star properties in a chiral SU(3) model
M. Hanauske, D. Zschiesche, S. Pal +3
We investigate various properties of neutron star matter within an effective chiral model. The predictions of this model are compared with a Walecka-type m…
Chiral model for dense, hot and strange hadronic matter
D. Zschiesche, P. Papazoglou, Ch. W. Beckmann +4
An extended chiral SU(3) model is applied to the description of dense, hot and strange hadronic matter. The degrees of freedom are the baryon octet and decuplet and the spin-0 and…
Charmonium Suppression - Interplay of Hadronic and Partonic Degrees of Freedom
L. Gerland, L. Frankfurt, M. Strikman +2
Last year the E866-group of the Fermilab measured the dependence of and suppression in collisions. We discuss two of the effects found in that experiment with…
Statistical Mechanics of semi-classical colored Objects
M. Hofmann, M. Bleicher, S. Scherer +3
A microscopic model of deconfined matter based on color interactions between semi-classical quarks is studied. A hadronization mechanism is imposed to examine the properties and th…
Antiflow of Nucleons at the Softest Point of the EoS
J. Brachmann, S. Soff, A. Dumitru +4
We investigate flow in semi-peripheral nuclear collisions at AGS and SPS energies within macroscopic as well as microscopic transport models. The hot and dense zone assumes the sha…
Equilibrium and non-equilibrium effects in relativistic heavy ion collisions
L. V. Bravina, E. E. Zabrodin, M. I. Gorenstein +10
The hypothesis of local equilibrium (LE) in relativistic heavy ion collisions at energies from AGS to RHIC is checked in the microscopic transport model. We find that kinetic, ther…
Hadron yields in Au+Au/Pb+Pb at RHIC and LHC from thermalized minijets
N. Hammon, H. Stöcker, W. Greiner +1
We calculate the yields of a variety of hadrons for RHIC and LHC energies assuming thermodynamical equilibration of the produced minijets, and using as input results from pQCD for…
Strangeness Enhancement in Heavy Ion Collisions - Evidence for Quark-Gluon-Matter ?
Sven Soff, Steffen A. Bass, Marcus Bleicher +5
The centrality dependence of (multi-)strange hadron abundances is studied for Pb(158 AGeV)Pb reactions and compared to p(158 GeV)Pb collisions. The microscopic transport model UrQM…
Local equilibrium in heavy ion collisions. Microscopic model versus statistical model analysis
L. V. Bravina, E. E. Zabrodin, M. I. Gorenstein +11
The assumption of local equilibrium in relativistic heavy ion collisions at energies from 10.7 AGeV (AGS) up to 160 AGeV (SPS) is checked in the microscopic transport model. Dynami…
Deuterons and space-momentum correlations in high energy nuclear collisions
B. Monreal, S. A. Bass, M. Bleicher +16
Using a microscopic transport model together with a coalescence after-burner, we study the formation of deuterons in Au + Au central collisions at . It is found…
Neutron star properties in the quark-meson coupling model
S. Pal, M. Hanauske, I. Zakout +2
The effects of internal quark structure of baryons on the composition and structure of neutron star matter with hyperons are investigated in the quark-meson coupling (QMC) model. T…
Hot Hypernuclear Matter in the Modified Quark Meson Coupling Model
I. Zakout, H. R. Jaqaman, S. Pal +2
Hot hypernuclear matter is investigated in an explicit SU(3) quark model based on a mean field description of nonoverlapping baryon bags bound by the self-consistent exchange of sc…
Moments of event observable distributions and many-body correlations
M. Belkacem, Z. Aouissat, M. Bleicher +2
We investigate event-by-event fluctuations for ensembles with non-fixed multiplicity. Moments of event observable distributions, like total energy distribution, total transverse mo…
Non-equilibrium initial conditions from pQCD for RHIC and LHC
N. Hammon, H. Stöcker, W. Greiner
We calculate the initial non-equilibrium conditions from perturbative QCD (pQCD) within Glauber multiple scattering theory for AGeV and ATeV. At the s…
Kinetic freeze out
V. K. Magas, Cs. Anderlik, L. P. Csernai +6
Freeze out of particles across a space-time hypersurface is discussed in kinetic models. The calculation of final momentum distribution of emitted particles is described for freeze…
Relativistic Hartree approach including both positive- and negative-energy bound states
G. Mao, H. Stöcker, W. Greiner
We develop a relativistic model to describe the bound states of positive energy and negative energy in finite nuclei at the same time. Instead of searching for the negative-energy…
Analysis of reaction dynamics at RHIC in a combined parton/hadron transport approach
S. A. Bass, M. Hofmann, M. Bleicher +4
We introduce a transport approach which combines partonic and hadronic degrees of freedom on an equal footing and discuss the resulting reaction dynamics. The initial parton dynami…
Modelling J/psi production and absorption in a microscopic nonequilibrium approach
C. Spieles, R. Vogt, L. Gerland +4
Charmonium production and absorption in heavy ion collisions is studied with the Ultrarelativisitic Quantum Molecular Dynamics model. We compare the scenario of universal and time…
Direct Emission of multiple strange baryons in ultrarelativistic heavy-ion collisions from the phase boundary
A. Dumitru, S. A. Bass, M. Bleicher +2
We discuss a model for the space-time evolution of ultrarelativistic heavy-ion collisions which employs relativistic hydrodynamics within one region of the forward light-cone, and…