刊名:The European Physical Journal A - Hadrons and Nuclei
出版年:2013
出版时间:September 2013
年:2013
卷:49
期:9
全文大小:398KB
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1. Helmholtz-Institut f眉r Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Universit盲t Bonn, Nussallee 14-16, D-53115, Bonn, Germany 2. St. Andrew the First-Called Georgian University of the Patriarchate of Georgia, Chavchavadze Ave. 53a, 0162, Tbilisi, Georgia 3. Institute of High Energy Physics, Ivane Javakhishvili Tbilisi State University, University St. 9, 109, Tbilisi, Georgia
ISSN:1434-601X
文摘
The divergent part of the one-loop effective action in Chiral Perturbation Theory with virtual photons has been evaluated in an arbitrary covariant gauge. The differential operator that emerges in the functional determinant is of non-minimal type, for which the standard heat kernel methods are not directly applicable. Both the SU(2) and SU(3) cases have been worked out. A comparison with existing results in the literature is given.