Dressing a Scalar Mass up to Two-Loop Order at Finite Temperature
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 $\lambda \phi^4$ 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.
- Publication:
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arXiv e-prints
- Pub Date:
- November 2001
- DOI:
- 10.48550/arXiv.hep-th/0111194
- arXiv:
- arXiv:hep-th/0111194
- Bibcode:
- 2001hep.th...11194D
- Keywords:
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- High Energy Physics - Theory
- E-Print:
- 20 pages, 4 ps figures, revtex, version published in Phys. Rev. D