Non-perturbative construction of counterterms for 2PI-approximation

Details Non-perturbative construction of counterterms for 2PI-approximation Non-perturbative construction of counterterms for 2PI-approximation

2008-09-22

arxiv.org/abs/0809.3551v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, poster presented at Strong and Electroweak Matter (SEWM2008), Amsterdam,August 25-29 2008

Scientific paper

10.1016/j.nuclphysa.2009.01.063

A concise method is presented for the non-perturbative computation of the counterterms renormalising 2PI-actions. The procedure is presented for a real scalar field up to lambda^2 order in the skeleton truncation of Gamma_2PI with respect to the self-coupling, and in a constant symmetry breaking background. The method is easily generalizable to field theories with arbitrary global symmetry.

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