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HK: Physik der Hadronen und Kerne

HK 20: Theory III

HK 20.6: Vortrag

Dienstag, 9. März 2004, 17:15–17:30, E

Quasiparticle Description of Hot QCD at Finite Quark Chemical Potential^(*) — •Michael Thaler¹, Roland Schneider^1,2, and Wolfram Weise^1,2 — ¹Physik Department Technische Universität München — ²ECT^∗, Villa Tambosi, Trento, Italy

We study the extension of a phenomenologically successful quasiparticle model that describes lattice results of the equation of state of the deconfined phase of QCD for T_c≤ T4pt0pt∼ 2pt< 4 T_c, to finite quark chemical potential µ. The phase boundary line T_c(µ), the pressure difference Δ p(T,µ)=(p(T,µ)−p(T,µ=0))/T⁴ and the quark number density n_q(T,µ)/T³ are calculated and compared to recent lattice results. Good agreement is found up to quark chemical potentials of order µ∼ T_c. ^(*) Work supported in part by BMBF and GSI.