Renormalization and resummation in finite temperature field theories

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Renormalization and resummation in finite temperature field theories

Resummation, ie. reorganization of perturbative series, can result in an inconsistent perturbation theory, unless the counterterms are reorganized in an appropriate way. In this paper two methods are presented for resummation of counterterms: one is a direct method where the necessary counterterms are constructed order by order; the other is a general one, based on renormalization group argumen...

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Using resummation in perturbation theories at finite temperature or in nonequilibrium is unavoidable to obtain consistent results. Resummation, however, is often in conflict with renormalization. In this talk we give two possible solutions to problems of this type in static resummation. One is the use of auxiliary finite temperature UV divergent counterterms. The other is to use a renormalizati...

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ژورنال

عنوان ژورنال: Physical Review D

سال: 2005

ISSN: 1550-7998,1550-2368

DOI: 10.1103/physrevd.71.105001