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arXiv · hep-ph/0304294

HTL quasiparticle models of deconfined QCD at finite chemical potential

A. Rebhan·P. Romatschke
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Abstract

Using quasiparticle models and imposing thermodynamic consistency, lattice data for the equation of state of deconfined QCD can be mapped to finite chemical potential. We consider a refinement of existing simple massive quasiparticle models using the non-local hard-thermal-loop (HTL) propagators, and certain NLO corrections thereof, to obtain the thermodynamic potential as a function of temperature and chemical potential. At small chemical potential we find that the results for the slope of constant pressure from our main model for 2 massless quark flavors is in good agreement with recent lattice data for 2+1 flavors while it deviates somewhat from lattice data for 2 flavors from another group. For zero temperature, we obtain an estimate for the critical chemical potential which is close to that obtained from simpler quasiparticle models.

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A. Rebhan, P. Romatschke. 2003-05-09. HTL quasiparticle models of deconfined QCD at finite chemical potential. https://doi.org/10.1103/physrevd.68.025022

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