Solutions of renormalization group flow equations with full momentum dependence

Details Solutions of renormalization group flow equations with full momentum dependence Solutions of renormalization group flow equations with full momentum dependence

2008-12-31

arxiv.org/abs/0901.0128v1

Phys.Rev.E80:030103,2009

Physics

Condensed Matter

Statistical Mechanics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevE.80.030103

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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