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arXiv · hep-ph/0510381

Quasiparticle Picture of Quarks near Chiral Phase Transition

Masakiyo Kitazawa·Teiji Kunihiro·Yukio Nemoto
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Abstract

We study how the quasiparticle picture of the quark can be modified near but above the critical tempearture (Tc) of the chiral phase transition; we incorporate into the quark self-energy the effects of the precursory soft modes of the phase transition, i.e., `para-σ(π) meson'. It is found that the quark spectrum has a three-peak structure near Tc: We show that the additional new spectra originate from the mixing between a quark (anti-quark) and an anti-quark hole (quark hole) caused by a ``resonant scattering'' of the quasi-fermions with the thermally-excited soft modes.

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Masakiyo Kitazawa, Teiji Kunihiro, Yukio Nemoto. 2005-10-28. Quasiparticle Picture of Quarks near Chiral Phase Transition. https://doi.org/10.1556/aph.27.2006.2-3.36

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