$Φ$-derivable approximations in gauge theories

Details $Φ$-derivable approximations in gauge theories $Φ$-derivable approximations in gauge theories

2003-01-14

arxiv.org/abs/hep-ph/0301093v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 4 small figures, to appear in the proceedings of SEWM 2002

Scientific paper

We discuss the method of $\Phi$-derivable approximations in gauge theories.
There, two complications arise, namely the violation of Bose symmetry in
correlation functions and the gauge dependence. For the latter we argue that
the error introduced by the gauge dependent terms is controlled, therefore not
invalidating the method.

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