M. Brandstetter
Goethe University Frankfurt
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Featured researches published by M. Brandstetter.
Progress in Particle and Nuclear Physics | 1998
Steffen A. Bass; M. Belkacem; Marcus Bleicher; M. Brandstetter; L. Bravina; C. Ernst; L. Gerland; M. Hofmann; S. Hofmann; J. Konopka; Guangjun Mao; Ludwig Neise; S. Soff; C. Spieles; H. Weber; L. Winckelmann; W. Greiner
In this paper, the concepts of microscopic transport theory are introduced and the features and shortcomings of the most commonly used ansatzes are discussed. In particular, the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) transport model is described in great detail. Based on the same principles as QMD and RQMD, it incorporates a vastly extended collision term with full baryon-antibaryon symmetry, 55 baryon and 32 meson species. Isospin is explicitly treated for all hadrons. The range of applicability stretches from
Physical Review C | 1998
M. Belkacem; H. Weber; Steffen A. Bass; J. Konopka; Mark I. Gorenstein; Marcus Bleicher; M. Brandstetter; L. Bravina; C. Spieles; S. Soff; W. Greiner; Horst Stoecker; Ludwig Neise
E_{lab} 200
Physical Review C | 1999
L. Bravina; E. Zabrodin; M.I. Gorenstein; Steffen A. Bass; M. Belkacem; Marcus Bleicher; M. Brandstetter; C. Ernst; M. Hofmann; Ludwig Neise; S. Soff; H. Weber; Horst Stoecker; W. Greiner
GeV/nucleon, allowing for a consistent calculation of excitation functions from the intermediate energy domain up to ultrarelativistic energies. The main physics topics under discussion are stopping, particle production and collective flow.
Journal of Physics G | 1999
L. Bravina; M. Brandstetter; M.I. Gorenstein; E. Zabrodin; M. Belkacem; Marcus Bleicher; Steffen A. Bass; C. Ernst; M. Hofmann; S. Soff; Horst Stöcker; W. Greiner
Bogolyubov Institute for Theoretical Physics, Kiev, Ukraine(February 9, 2008)Equilibrium properties of infinite relativistic hadron matter are investi-gated using the Ultrarelativistic Quantum Molecular Dynamics (UrQMD)model. The simulations are performed in a box with periodic boundary con-ditions. Equilibration times depend critically on energy and baryon densities.Energy spectra of various hadronic species are shown to be isotropic andconsistent with a single temperature in equilibrium. The variation of energydensity versus temperature shows a Hagedorn-like behavior with a limitingtemperature of 130±10 MeV. Comparison of abundances of different particlespecies to ideal hadron gas model predictions show good agreement only ifdetailed balance is implemented for all channels. At low energy densities,high mass resonances are not relevant; however, their importance raises withincreasing energy density. The relevance of these different conceptual frame-works for any interpretation of experimental data is questioned.
Physical Review Letters | 1998
Steffen A. Bass; M. Belkacem; M. Brandstetter; Marcus Bleicher; L. Gerland; J. Konopka; Ludwig Neise; C. Spieles; S. Soff; H. Weber; H. Stöcker; W. Greiner
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. Dynamical calculations performed for a central cell in the reaction are compared to the predictions of the thermal statistical model. We find that kinetic, thermal and chemical equilibration of the expanding hadronic matter are nearly approached late in central collisions at AGS energy for
Physics Letters B | 1998
L. Bravina; M.I. Gorenstein; M. Belkacem; Steffen A. Bass; Marcus Bleicher; M. Brandstetter; M. Hofmann; S. Soff; C. Spieles; H. Weber; Horst Stöcker; W. Greiner
t \geq 10
Physical Review C | 2001
L. Bravina; E. Zabrodin; Steffen A. Bass; M. Bleicher; M. Brandstetter; Amand Faessler; C. Fuchs; W. Greiner; S. Soff; H. Stoecker
fm/
Physical Review C | 2000
L. Bravina; E. Zabrodin; Steffen A. Bass; M. Bleicher; M. Brandstetter; S. Soff; H. Stöcker; W. Greiner
c
Nuclear Physics | 1996
L. Winckelmann; Steffen A. Bass; Marcus Bleicher; M. Brandstetter; Adrian Dumitru; C. Ernst; L. Gerland; J. Konopka; S. Soff; C. Spieles; H. Weber; C. Hartnack; J. Aichelin; N.S. Amelin; Horst Stöcker; W. Greiner
in a central cell. At these times the equation of state may be approximated by a simple dependence
Journal of Physics G | 2001
L. Bravina; E. Zabrodin; M. Bleicher; Steffen A. Bass; M. Brandstetter; Amand Faessler; C. Fuchs; W. Greiner; M.I. Gorenstein; S. Soff; H. Stöcker
P \cong (0.12-0.15) \epsilon