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Temperature renormalization group approach to spontaneous symmetry breaking

1985; Elsevier BV; Volume: 157; Issue: 4 Linguagem: Inglês

10.1016/0370-2693(85)90667-7

1873-2445

E. K. Manesis, S. Sakakibara,

Atomic and Subatomic Physics Research

Abstract We apply renormalization group equations that describe the finite-temperature behavior of Green's functions to investigate thermal properties of spontaneous symmetry breaking. Specifically, in the O ( N )× O ( N ) symmetric model we study the change of symmetry breaking patterns with temperature, and show that there always exists the unbroken symmetry phase at high temperature, modifying the naive result of leading order in finite-temperature perturbation theory.