1208.5021 (I. Nandori)

Functional renormalization group with a compactly supported smooth
regulator function    [PDF]

I. Nandori

The functional renormalization group equation with a compactly supported smooth (CSS) regulator function is considered. It is demonstrated that in an appropriate limit the CSS regulator recovers the optimized one and it has derivatives of all orders. The CSS regulator function is tested by studying the critical behavior of the bosonized two-dimensional quantum electrodynamics. It is shown that a similar smoothing problem in nuclear physics has already been solved by introducing the so called Salamon-Vertse potential which can be related to the CSS regulator.

View original: http://arxiv.org/abs/1208.5021