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

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

2001-11-21

arxiv.org/abs/hep-th/0111194v2

Phys.Rev. D65 (2002) 065005

Physics

High Energy Physics

High Energy Physics - Theory

20 pages, 4 ps figures, revtex, version published in Phys. Rev. D

Scientific paper

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 $\lambda \phi^4$ 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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