title: Nonperturbative renormalization group preserving full-momentum dependence: implementation and quantitative evaluation.
abstract: We present the implementation of the Blaizot-Méndez-Wschebor approximation scheme of the nonperturbative renormalization group we present in detail, which allows for the computation of the full-momentum dependence of correlation functions. We discuss its significance and its relation with other schemes, in particular, the derivative expansion. Quantitative results are presented for the test ground of scalar O(N) theories. Besides critical exponents, which are zero-momentum quantities, we compute the two-point function at criticality in the whole momentum range in three dimensions and, in the high-temperature phase, the universal structure factor. In all cases, we find very good agreement with the best existing results.
authors.affiliation: LPTMC, CNRS-UMR 7600, Université Pierre et Marie Curie, F-75252 Paris, France.
authors.forename: F
authors.initials: F
authors.lastname: Benitez
authors.forename: J-P
authors.initials: JP
authors.lastname: Blaizot
authors.forename: H
authors.initials: H
authors.lastname: Chaté
authors.forename: B
authors.initials: B
authors.lastname: Delamotte
authors.forename: R
authors.initials: R
authors.lastname: Méndez-Galain
authors.forename: N
authors.initials: N
authors.lastname: Wschebor