Chiral transition and mesonic excitations for quarks with thermal masses

Details Chiral transition and mesonic excitations for quarks with thermal masses Chiral transition and mesonic excitations for quarks with thermal masses

2006-10-27

arxiv.org/abs/hep-ph/0610374v3

Phys.Rev.D75:011901,2007; Erratum-ibid.D75:099901,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 6 figures, typos corrected

Scientific paper

10.1103/PhysRevD.75.011901

We study the effect of a thermal quark mass, m_T, on the chiral phase transition and mesonic excitations in the light quark sector at finite temperature in a simple chirally-symmetric model. We show that while nonzero m_T lowers the chiral condensate, the chiral transition remains of second order. It is argued that the mesonic excitations have large decay rate at energies below 2m_T, owing to the Landau damping of the quarks and the van Hove singularities of the collective modes.

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