Renormalization of 2PI resummation: a renormalization scheme approach

Abstract

A practical method is suggested for performing renormalized 2PI resummation at finite temperature using specific momentum dependent renormalization schemes. In this method there is no need to solve Bethe-Salpeter equations for 2PI resummation. We examine the consistency of such schemes in the paper. The proposed method is used to perform a two-loop renormalized 2PI resummation in the finite temperature Phi^4 model.

14 pages revtex, 8 figures

Cited by in corpus (2)

• Renormalisability of the 2PI-Hartree approximation of multicomponent scalar models in the broken symmetry phase
• Counterterm resummation for 2PI-approximation in constant background