Gießen 2007 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 20: Theorie

HK 20.2: Vortrag

Dienstag, 13. März 2007, 17:15–17:30, C

Quark mass dependence of 1-loop and HTL self-energies — •Daniel Seipt¹, Marcus Bluhm², Robert Schulze¹, and Burkhard Kämpfer^1,2 — ¹Institut für Theoretische Physik, TU Dresden, 01062 Dresden, Germany — ²Forschungszentrum Dresden-Rossendorf, PF 510119, 01314 Dresden, Germany

We present a systematic study of the quark mass dependence of 1-loop and HTL self-energies in hot QCD. These self-energies enter our quasi-particle model, which allows to parametrize and extend lattice QCD results for the equation of state. The primary goal is a handle of the chiral extrapolation of lattica data, provided often at finite quark mass parameters. Another interest is the precise description of the thermal history of the universe over a large temperature interval, say from electroweak symmetry breaking down to chiral restoration, where the strongly interacting matter dominates over contributions from the electroweak sector.