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Chiral transition and mesonic excitations for quarks with thermal masses

Yoshimasa Hidaka·Masakiyo Kitazawa
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Abstract

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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Yoshimasa Hidaka, Masakiyo Kitazawa. 2007-05-14. Chiral transition and mesonic excitations for quarks with thermal masses. https://doi.org/10.1103/physrevd.75.011901%2010.1103%2Fphysrevd.75.099901

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