Jens Konopka

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Basic problems of the semiclassical microscopic modelling of strongly interacting systems are discussed within the framework of Quantum Molecular Dynamics (QMD). This model allows to study the influence of several types of nucleonic interactions on a large variety of observables and phenomena occurring in heavy ion collisions at relativistic energies. It is(More)
N.I. Vavilov considered the territory of Afghanistan, the site of one of the first centers of farming, to be Central Asia’s hub of crop origin and diversity. This center also includes the hexaploid 42-chromosomal wheat with the AABBDD genomic formula. The agricultural regions of Afghanistan were surveyed repeatedly by scientific expeditions from various(More)
M. Belkacem, M. Brandstetter, S. A. Bass, M. Bleicher, L. Bravina, M. I. Gorenstein, J. Konopka, L. Neise, C. Spieles, S. So , H. Weber, H. Stocker and W. Greiner 1 Institut f ur Theoretische Physik, J. W. Goethe-Universit at, D-60054 Frankfurt am Main, Germany 2 Dept. of Physics, Duke University, Durham 27708-0305, USA 3 Bogolyubov Institute for(More)
The wake vortex warning system, WVWS, at Frankfurt airport, in particular the so called glide-path extension is now technically completed. The system shall enable a reduction of the wake turbulence separation using predictions of the wake vortices' motion between the two closely spaced parallel final approach paths for runways 25L and 25R up to 5000 ft(More)
Nonequilibrium models (three-fluid hydrodynamics, UrQMD, and quark molecular dynamics) are used to discuss the uniqueness of often proposed experimental signatures for quark matter formation in relativistic heavy ion collisions from the SPS via RHIC to LHC. It is demonstrated that these models – although they do treat the most interesting early phase of the(More)
One of the main aims of relativistic heavy ion collisions at collider energies is to discover if the individual hadrons dissolve into a gas of free quarks and gluons (quark-gluon-plasma, QGP) in the extremely compressed and heated hadronic matter. This may happen in line with a transition into the chiral symmetric phase which modificates most hadron masses(More)
The behavior of hadronic matter at high baryon densities is studied within Ultrarelativistic Quantum Molecular Dynamics (URQMD). Baryonic stopping is observed for Au+Au collisions from SIS up to SPS energies. The excitation function of flow shows strong sensitivities to the underlying equation of state (EOS), allowing for systematic studies of the EOS.(More)
L.A. Winckelmann, S.A. Bass, M. Bleicher, M. Brandstetter, A. Dumitru, C. Ernst, L. Gerland, J. Konopka, S. Soff, C. Spieles, H. Weber, C. Hartnack , J. Aichelin , N. Amelin, H. Stöcker and W. Greiner Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, Gesellschaft für Schwerionenforschung, Darmstadt, Germany SUBATECH, Ecole des Mines,(More)
Quantum Molecular Dynamics (QMD) calculations of central collisions between heavy nuclei are used to study fragment production and the creation of collective flow. It is shown that the final phase space distributions are compatible with the expectations from a thermally equilibrated source, which in addition exhibits a collective transverse expansion.(More)
  • C Spieles, A Dumitru, +13 authors Nucleons Pions
  • 1996
Figure 1: ’Equation of state’ of infinite nuclear matter, calculated with URQMD (preliminary). Shown is the energy density as a function of temperature (extracted with a least square fit to the baryon momentum spectrum) at fixed net-baryon density of ρ = 0.16 fm. The equations of state of a Hagedorn-gas, of a quark-gluon plasma, and of an ideal gas of(More)