Trace anomaly and quasiparticles in finite temperature SU( N) gauge theory
Abstract
We consider deconfined matter in SU( N) gauge theory as an ideal gas of transversely polarized quasiparticle modes having a temperaturedependent 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 ∆=( ∊3 P)/ T ^{4} and energy density are found to agree well with finite temperature SU(3) lattice calculations.
 Publication:

European Physical Journal C
 Pub Date:
 June 2011
 DOI:
 10.1140/epjc/s1005201116737
 arXiv:
 arXiv:1101.1255
 Bibcode:
 2011EPJC...71.1673C
 Keywords:

 High Energy Physics  Phenomenology;
 High Energy Physics  Lattice
 EPrint:
 13 pages, 13 figures