Modelling the many-body dynamics of heavy ion collisions: Present status and future perspective
Ch. Hartnack1 - Rajeev K. Puri1 - J. Aichelin1 - J. Konopka2 - S.A. Bass2 - H. Stöcker2 - W. Greiner2
1 Laboratoire de physique subatomique et des Technologies associées
(SUBATECH), UMR Université de Nantes, CNRS, Ecole des Mines, 4 rue A. Kastler,
F-44070 Nantes, France
2 Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität,
Postfach 11 19 32, D-60054 Frankfurt am Main, Germany
Received: 27 November 1996 / Revised version: 14 April 1997 Communicated by V. Metag
Abstract
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 shown that the same predictions can be obtained with several -
numerically completely different and independently written - programs as far
as the same model parameters are employed and the same basic approximations
are made. Many observables are robust against variations of the details of
the model assumptions used. Some of the physical results, however, depend
also on rather technical parameters like the preparation of the initial
configuration in phase space. This crucial problem is connected with the
description of the ground state of single nuclei,
which differs among the various approaches.
An outlook to an improved
molecular dynamics scheme for heavy ion collisions is given.
PACS
25.75-q Relativistic heavy-ion collisions
Copyright Springer-Verlag
