C. Ernst
Goethe University Frankfurt
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Featured researches published by C. Ernst.
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
Journal of Physics G | 1999
Marcus Bleicher; E. Zabrodin; C. Spieles; Steffen A. Bass; C. Ernst; S. Soff; L. Bravina; M. Belkacem; H. Weber; Horst Stöcker; W. Greiner
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.
Progress in Particle and Nuclear Physics | 1999
S. Scherer; Steffen A. Bass; Marcus Bleicher; M. Belkacem; L. Bravina; J. Brachmann; A. Dumitru; C. Ernst; L. Gerland; M. Hofmann; Ludwig Neise; M. Reiter; S. Soff; C. Spieles; H. Weber; E. Zabrodin; D. Zschiesche; J. A. Maruhn; H. Stöcker; W. Greiner
Hadron-hadron (h-h) collisions at high energies are investigated in the ultra-relativistic quantum molecular dynamics (UrQMD) approach. This microscopic transport model describes the phenomenology of hadronic interactions at low and intermediate energies ( 5 GeV, the excitation of colour strings and their subsequent fragmentation into hadrons dominates the multiple production of particles in the UrQMD model. The model shows a fair overall agreement with a large body of experimental h-h data over a wide range of h-h centre-of-mass energies. Hadronic reaction data with higher precision would be useful to support the use of the UrQMD model for relativistic heavy-ion collisions.
Physics Letters B | 1998
Marcus Bleicher; M. Belkacem; C. Ernst; H. Weber; L. Gerland; C. Spieles; Steffen A. Bass; Horst 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
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
t \geq 10
Physics Letters B | 1998
H. Weber; C. Ernst; Marcus Bleicher; L. Bravina; Horst Stöcker; W. Greiner; C. Spieles; Steffen A. Bass
fm/
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
c
Progress in Particle and Nuclear Physics | 1999
Steffen A. Bass; H. Weber; C. Ernst; Marcus Bleicher; M. Belkacem; L. Bravina; S. Soff; Horst Stöcker; W. Greiner; C. Spieles
in a central cell. At these times the equation of state may be approximated by a simple dependence
Nuclear Physics | 1999
Song Gao; Charles Gale; C. Ernst; Horst Stöcker; W. Greiner
P \cong (0.12-0.15) \epsilon