Article ID Journal Published Year Pages File Type
1846646 Nuclear Physics B - Proceedings Supplements 2010 6 Pages PDF
Abstract

In covariant gauges (CG) regularized with dimensional regularization (DR) it is a standard procedure to set all tadpole Feynman integrals to zero, though, explicitly, they diverge quadratically as the space-time volume. On the other hand, in the notoriously subtle light-front gauge (LFG) some divergent tadpole integrals are said to be nonvanishing, i.e., cannot be set to zero as in the CG case. In this article we analyse the reasons behind this seemingly ambiguous results.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Nuclear and High Energy Physics