Dressing a Scalar Mass up to Two-Loop Order at Finite Temperature

2001/11/30 by H. C. de Godoy Caldas
Physics and Astronomy · #hep-th

paper · pdf

published as Phys.Rev. D65 (2002) 065005 · 20 pages, 4 ps figures, revtex, version published in Phys. Rev. D

arxiv created 2002/02/18 · arxiv updated 2009/11/30

Abstract

In this paper we use Modified Self-Consistent Resummation (MSCR) in order to obtain the scalar dressed mass by evaluating the self-energy up to two loops in the neutral scalar λϕ⁴ model at finite temperature. With this laboratory model we show that, if a theory is renormalizable at zero temperature, using the MSCR it is always possible to obtain a finite corrected mass at finite temperature. This feature of the MSCR is not observed in some other approximation techniques usually found in the literature.

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