Behavior of the topological susceptibility at finite T and μ and signs of restoration of chiral symmetries
Centro de Fısica Teórica, Departamento de Fısica, Universidade de Coimbra, P-3004-516, Coimbra, Portugal
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Accepted: 15 November 2006
Published online: 12 March 2007
We investigate the possible restoration of chiral and axial symmetries across the phase transition at finite temperature and chemical potential, by analyzing the behavior of several physics quantities, such as the quark condensates and the topological susceptibility, the respective derivatives with respect to the chemical potential, and the masses of meson chiral partners. We discuss whether only chiral symmetry or both chiral and axial symmetries are restored and what the role of the strange quark is. The results are compared with recent lattice results.
PACS: 11.30.Rd Chiral symmetries – / 11.10.Wx Finite-temperature field theory – / 14.40.Aq π, K, and η mesons –
© Società Italiana di Fisica and Springer-Verlag, 2007