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HK: Fachverband Physik der Hadronen und Kerne
HK 28: Theorie
HK 28.8: Vortrag
Dienstag, 11. März 2008, 13:00–13:15, 2F
Diagonal and Off-Diagonal Susceptibilities in a Quasiparticle Model of the Quark-Gluon Plasma — •Marcus Bluhm1 and Burkhard Kämpfer1,2 — 1Forschungszentrum Dresden-Rossendorf, Institut für Strahlenphysik, PF 510119, 01314 Dresden, Germany — 2TU Dresden, Institut für Theoretische Physik, 01062 Dresden, Germany
We extend our quasiparticle model, which is linked to QCD via the two-loop Φ-functional approach [1], to two independent chemical potentials by generalizing Peshier’s flow equation which transports information from zero to non-zero net baryon densities. In this way, we have access to diagonal and off-diagonal susceptibilities as well as quark number, isovector and electric charge susceptibilities. The model compares fairly well with the available lattice QCD data for two degenerate quark flavors. Testing the self-consistent extrapolation to large baryon densities within our quasiparticle model is important for a firm knowledge of the QCD equation of state relevant for the hydrodynamic description of the expansion stage of heavy-ion collision experiments [2] as needed, for instance, for SPS and future FAIR experiments.
=0pt References
[1] M. Bluhm, B. Kämpfer, R. Schulze and D. Seipt, Eur. Phys. J. C 49 (2007) 205.
[2] M. Bluhm, B. Kämpfer, R. Schulze, D. Seipt and U. Heinz, Phys. Rev. C 76 (2007) 034901.