Non-perturbative renormalization group calculation of the scalar self-energy J.-P. Blaizot, R. Méndez-Galain and N. Wschebor Eur. Phys. J. B, 58 3 (2007) 297-309 Published online: 08 September 2007 DOI: 10.1140/epjb/e2007-00223-3