Higher derivative extension of the functional renormalization group
arXiv:2203.07009 · doi:10.1093/ptep/ptac080
Abstract
We study higher derivative extension of the functional renormalization group (FRG). We consider FRG equations for a scalar field that consist of terms with higher functional derivatives of the effective action and arbitrary cutoff functions. We show that the epsilon expansion around the Wilson-Fisher fixed point is indeed reproduced by the local potential approximation of the FRG equations.
arXiv comment15 pages, published version
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