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arXiv · 0901.0128

Solutions of renormalization group flow equations with full momentum dependence

F. Benitez·J. -P. Blaizot·H. Chate·B. Delamotte·R. Mendez-Galain·N. Wschebor
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Abstract

We demonstrate the power of a recently-proposed approximation scheme for the non-perturbative renormalization group that gives access to correlation functions over their full momentum range. We solve numerically the leading-order flow equations obtained within this scheme, and compute the two-point functions of the O(N) theories at criticality, in two and three dimensions. Excellent results are obtained for both universal and non-universal quantities at modest numerical cost.

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F. Benitez, J. -P. Blaizot, H. Chate, B. Delamotte, R. Mendez-Galain, N. Wschebor. 2008-12-31. Solutions of renormalization group flow equations with full momentum dependence. https://doi.org/10.1103/physreve.80.030103

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