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Nonequilibrium chiral perturbation theory

A. Gomez Nicola
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Abstract

We explore the extension of chiral perturbation theory out of thermal equilibrium. The pion decay constant becomes then a time-dependent function and we work within the Schwinger-Keldysh contour technique. A useful connection with curved space-time QFT allows to renormalise the model. We discuss the applicability of our approach within a relativistic heavy-ion collision environment.

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A. Gomez Nicola. 1999-02-15. Nonequilibrium chiral perturbation theory. https://arxiv.org/abs/hep-ph/9902344

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