The Chiral Fermion Meson Model at Finite Temperature

Details The Chiral Fermion Meson Model at Finite Temperature The Chiral Fermion Meson Model at Finite Temperature

2000-05-18

arxiv.org/abs/hep-ph/0005180v4

Phys.Rev. D63 (2001) 056011

Physics

High Energy Physics

High Energy Physics - Phenomenology

31 pages, 9 EPS figures. Final version with extended Concluding Remarks section, accepted for publication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.63.056011

We study the chiral fermion meson model which is the well known linear sigma model of Gell-Mann-and-Levy at finite temperature.A modified self-consistent resummation (MSCR) which resums higher order terms in the perturbative expansion is proposed. It is shown that with the MSCR the problem of tachyonic masses is solved, the renormalization of the gap equations is carried out and the Goldstone's theorem is verified. We also apply the method to investigate another known case at high temperature and compare with results found in the literature.

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