Nonequilibrium field theory from the 2PI effective action

Details Nonequilibrium field theory from the 2PI effective action Nonequilibrium field theory from the 2PI effective action

2005-12-22

arxiv.org/abs/hep-ph/0512308v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk given at the 29th Johns Hopkins Workshop on current problems in particle theory: Strong matter in the heavens

Scientific paper

Nonperturbative approximation schemes are inevitable even in weakly coupled theories if the nonequilibrium behavior of quantum fields is investigated. The two-particle irreducible (2PI) effective action formalism provides an efficient framework for obtaining resummation schemes both in and out of equilibrium. We briefly review the these techniques and discuss recent findings for nonequilibrium field theories.

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