Quenched QCD at finite temperature with chiral Fermions

Details Quenched QCD at finite temperature with chiral Fermions Quenched QCD at finite temperature with chiral Fermions

2001-07-30

arxiv.org/abs/hep-lat/0107022v1

Phys.Rev.D65:094504,2002

Physics

High Energy Physics

High Energy Physics - Lattice

4 pages, 4 figures

Scientific paper

10.1103/PhysRevD.65.094504

We study physics at temperatures just above the QCD phase transition (Tc) using chiral (overlap) Fermions in the quenched approximation of lattice QCD. Exact zero modes of the overlap Dirac operator are localized and their frequency of occurrence drops with temperature. This is closely related to axial U(1) symmetry, which remains broken up to 2Tc. After subtracting the effects of these zero modes, chiral symmetry is restored, as indicated by the behavior of the chiral condensate. The pseudoscalar and vector screening masses are close to ideal gas values.

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