Trace Anomaly and Quasi-Particles in Finite Temperature SU(N) Gauge Theory

Details Trace Anomaly and Quasi-Particles in Finite Temperature SU(N) Gauge Theory Trace Anomaly and Quasi-Particles in Finite Temperature SU(N) Gauge Theory

2011-01-06

arxiv.org/abs/1101.1255v2

Eur.Phys.J.C71:1673,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 13 figures; references added for version 2

Scientific paper

10.1140/epjc/s10052-011-1673-7

We consider deconfined matter in SU(N) gauge theory as an ideal gas of transversely polarized quasi-particle modes having a temperature-dependent mass m(T). Just above the transition temperature, the mass is assumed to be determined by the critical behavior of the energy density and the screening length in the medium. At high temperature, it becomes proportional to T as the only remaining scale. The resulting (trace anomaly based) interaction measure Delta=(e - 3P)/T^4 and energy density are found to agree well with finite temperature SU(3) lattice calculations.

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