Multi Module Modeling of Ultra-Relativistic Heavy Ion Collisions

por Volodymyr Magas (Valencia U.)

viernes 28 nov. 2003 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

Multi Module Model is needed for the realistic and detailed description of ultra-relativistic heavy ion collision, in which each stage of the reaction is described with the most suitable theoretical approach. We are working in the framework of such a model: initial stages are described by Effective String Rope Model with expanding final streaks[1]; hydrodynamical approach is used for the intermediate stages of the reaction; the Third Module has to do with the freeze out process. It is very important to make sure that all the modules are properly coupled to each other (i.e. all the conservation laws are satisfies on the dividing hypersurface) and that such a transition is physically allowed (i.e. entropy does not decrease). The work on the Third Module is still in progress. I will discuss the "exotic" situation of simultaneous hadronization and freeze out of supercooled QGP [2], as a possible solution of the HBT puzzle at RHIC. I will also discuss how one can define the freeze out and deconfinement conditions for hadronic matter in a simple percolation model [3]. 1. V.K. Magas, L.P. Csernai, D.D. Strottman, Phys.Rev. C64 (2001) 014901; Nucl.Phys. A712 (2002) 167-204. 2. A. Keranen, J. Manninen, L.P. Csernai, V. Magas, Phys.Rev. C67 (2003) 034905; L.P. Csernai, M.I. Gorenstein, L.L. Jenkovszky, I. Lovas, V.K. Magas, Phys.Lett. B551 (2003) 121-126. 3. V.K. Magas, H. Satz, hep-ph/0308155, accepted to Eur.Phys. J. C.