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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 65.9: Gruppenbericht

Donnerstag, 19. März 1998, 16:30–17:00, F

The equation of state of the quark-gluon plasma — •A. Peshier1, B. Kämpfer1, O.P. Pavlenko2, and G. Soff31Research Center Rossendorf Inc., PF 510119, 01314 Dresden — 2Institute for Theoretical Physics, 252143 Kiev - 143, Ukraine — 3Institut für Theoretische Physik, Technische Universität Dresden, 01062 Dresden

An effective quasi-particle description [1] of strongly interacting systems is shown to reproduce the thermodynamical properties of both the pure SU(3) plasma [2] as well as plasmas containing several light flavors of quarks [3]. The model is extended to non-zero quark chemical potential which so far was not implemented in lattice calculations. This gives an estimate of the equation of state p(T,µ) of deconfined matter produced in the course of ultrarelativistic heavy-ion collisions. The relation of the model [1] to exact QCD thermodynamics is discussed.

[1] A. Peshier et al., Phys. Rev. D54 (1996) 2399

[2] G. Boyd et al., Nucl. Phys. B469 (1996) 419

[3] S. Gottlieb et al., Phys. Rev. D55 (1997) 6852,
[2] C. Bernard et al., Phys. Rev. D55 (1997) 6861,
[2] J. Engels et al., Phys. Lett. B396 (1997) 210

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