| Numéro |
J. Phys. Colloques
Volume 48, Numéro C2, Juin 1987
International Workshop on Semiclassical and Phase Space Approaches to the Dynamics of the Nucleus
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| Page(s) | C2-165 - C2-174 | |
| DOI | https://doi.org/10.1051/jphyscol:1987224 | |
J. Phys. Colloques 48 (1987) C2-165-C2-174
DOI: 10.1051/jphyscol:1987224
IMPORTANCE OF MOMENTUM DEPENDENT INTERACTIONS FOR THE EXTRACTION OF THE NUCLEAR EQUATION OF STATE FROM HIGH ENERGY HEAVY ION COLLISIONS
J. AICHELIN1, A. ROSENHAUER2, G. PEILERT2, H. STOECKER2 et W. GREINER21 Institut für Theoretische Physik der Universität Heidelberg and Max-Planck-Institut für Kernphysik, D-6900 Heidelberg, F.R.G.
2 Institut für Theoretische Physik, Johann Wolfgang Goethe Universität Frankfurt, D-6000 Frankfurt, F.R.G.
Abstract
We demonstrate that momentum dependent nuclear interactions (MDI) have a large effect on the dynamics and on the observables of high energy heavy ion collisions : Pion and kaon yields are strongly suppressed by MDI. This effect is much stronger than the supression due to a hard local potential. which introduces an ambiguity into the recent extraction of the nuclear equation of state from pion (and kaon) yields. Also the transverse rnomentum distributions exhibit a strong dependence on the MDI. The collective flow angles and the deuteron to proton ratios, on the other hand, are rather insensitive to the MDI. They may therefore be related directly to the nuclear equation of state at high density. Similtaneous measurements of these observables in heavy ion collisions can give clues on the nuclear equation of state at densities of interest for supernova collapse and neutron star stability.