Renormalization Group Approach to Field Theory at Finite Temperature

Details Renormalization Group Approach to Field Theory at Finite Temperature Renormalization Group Approach to Field Theory at Finite Temperature

1995-01-30

arxiv.org/abs/hep-th/9501137v1

Phys.Rev. D52 (1995) 3653-3671

Physics

High Energy Physics

High Energy Physics - Theory

29 pages, can include figures in the body of the text using epsf.sty

Scientific paper

10.1103/PhysRevD.52.3653

Scalar field theory at finite temperature is investigated via an improved renormalization group prescription which provides an effective resummation over all possible non-overlapping higher loop graphs. Explicit analyses for the lambda phi^4 theory are performed in d=4 Euclidean space for both low and high temperature limits. We generate a set of coupled equations for the mass parameter and the coupling constant from the renormalization group flow equation. Dimensional reduction and symmetry restoration are also explored with our improved approach.

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