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Köln 2004 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 20: Theory III

HK 20.6: Talk

Tuesday, March 9, 2004, 17:15–17:30, E

Quasiparticle Description of Hot QCD at Finite Quark Chemical Potential(*) — •Michael Thaler1, Roland Schneider1,2, and Wolfram Weise1,21Physik 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 TcT4pt0pt∼ 2pt< 4 Tc, to finite quark chemical potential µ. The phase boundary line Tc(µ), the pressure difference Δ p(T,µ)=(p(T,µ)−p(T,µ=0))/T4 and the quark number density nq(T,µ)/T3 are calculated and compared to recent lattice results. Good agreement is found up to quark chemical potentials of order µ∼ Tc. (*) Work supported in part by BMBF and GSI.

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