HTL quasiparticle picture of the thermodynamics of QCD

Details HTL quasiparticle picture of the thermodynamics of QCD HTL quasiparticle picture of the thermodynamics of QCD

2001-09-27

arxiv.org/abs/hep-ph/0109267v1

Nucl.Phys. A702 (2002) 111-122

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at the International Conference on Statistical QCD, Bielefeld, Germany, August 26--30, 2001. 10 pages LATEX, 7 figu

Scientific paper

10.1016/S0375-9474(02)00693-0

Starting from a nonperturbative expression for entropy and density obtained from $\Phi$-derivable two-loop approximations to the thermodynamic potential, a quasiparticle model for the thermodynamics of QCD can be developed which incorporates the physics of hard thermal loops and leads to a reorganization of the otherwise ill-behaved thermal perturbation theory through order $\alpha_s^{3/2}$. Some details of this reorganization are discussed and the differences to simpler quasiparticle models highlighted. A comparison with available lattice data shows remarkable agreement down to temperatures of $\sim 2.5 T_c$.

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