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Bochum 1998 – wissenschaftliches Programm

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HK: Hadronen und Kerne

HK 65: Heavy Ion Reactions VIII, Ultrarelativistic Energies

HK 65.4: Vortrag

Donnerstag, 19. März 1998, 14:45–15:00, F

Phase transition of a finite quark-gluon plasma — •Carsten Greiner1, Christian Spieles2, and Horst Stöcker21Institut für Theoretische Physik, Universität Giessen — 2Institut für Theoretische Physik, Universität Frankfurt

The deconfinement transition region between hadronic matter and quark-gluon plasma is studied for finite volumes. Assuming simple model equations of state and a first order phase transition, we find that fluctuations in finite volumes hinder a sharp separation between the two phases around the critical temperature, leading to a rounding of the phase transition. For reaction volumes expected in heavy ion experiments, the softening of the equation of state is reduced considerably. This is especially true when the requirement of exact color-singletness is included in the QGP equation of state.


Supported by BMBF, DFG and GSI Darmstadt

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