Chiral Symmetry in Two-Color QCD at Finite Temperature

Details Chiral Symmetry in Two-Color QCD at Finite Temperature Chiral Symmetry in Two-Color QCD at Finite Temperature

1999-12-21

arxiv.org/abs/hep-ph/9912446v1

Phys.Rev. D62 (2000) 045012

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, Revtex

Scientific paper

10.1103/PhysRevD.62.045012

We study the chiral symmetry in two-color QCD with N massless flavors at finite temperature, using an effective theory. For the gauge group SU(2), the chiral symmetry is enlarged to SU(2N), which is then spontaneously broken to Sp(2N) at zero temperature. At finite temperature, and when the axial anomaly can be neglected, we find a first order phase transition occurring for two or more flavors. In the presence of instantons, the symmetry restoration unambiguously remains first order for three or more massless flavors. These results could be relevant for lattice studies of chiral symmetry at finite temperature and density.

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