Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2004-03-27
Nucl.Phys. B704 (2005) 208-230
Physics
High Energy Physics
High Energy Physics - Lattice
28 pages: revised version to be published in Nuclear Physics B
Scientific paper
10.1016/j.nuclphysb.2004.10.045
We analyze a two dimensional SU(3) gauge model of Wilson lines as a dimensionally reduced model of high temperature QCD_3. In contrast to perturbative dimensional reduction it has an explicit global Z(3) symmetry in the action. The phase diagram of the model is studied in the space of two free parameters used to describe the self interaction of the Wilson lines. In addition to the confinement-deconfinement transition, the model also exhibits a new Z(3)-breaking phase. These findings are obtained by numerical simulations, and supported by a perturbative calculation to one loop. A screening mass from Polyakov loop correlations is calculated numerically. It matches the known QCD_3 mass in a domain of parameters belonging to the normal deconfined phase.
Bialas Piotr
Morel André
Petersson Bengt
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