2PI renormalized effective action for gauge theories

We show how to perform renormalization in the framework of the 2PI effective action for abelian gauge theories. In addition to the usual renormalization conditions one needs to incorporate new ones in order to remove non-transverse UV divergences in the truncated two- and four-photon functions. The...

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Bibliographic Details
Published in:Nuclear physics. A 2007-03, Vol.785 (1), p.230-233
Main Authors: Reinosa, U., Serreau, J.
Format: Article
Language:English
Subjects:
High Energy Physics - Theory
Physics
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Summary:We show how to perform renormalization in the framework of the 2PI effective action for abelian gauge theories. In addition to the usual renormalization conditions one needs to incorporate new ones in order to remove non-transverse UV divergences in the truncated two- and four-photon functions. The corresponding counterterms are allowed by gauge symmetry, in-medium independent and suppressed with respect to the accuracy of the truncation.
ISSN:0375-9474
1873-1554
DOI:10.1016/j.nuclphysa.2006.11.126