Nonequilibrium chiral perturbation theory and disoriented chiral condensates

@inproceedings{Nicola1999NonequilibriumCP,
  title={Nonequilibrium chiral perturbation theory and disoriented chiral condensates},
  author={{\'A}ngel G{\'o}mez Nicola},
  year={1999}
}
We analyze the extension of Chiral Perturbation Theory to describe a meson gas out of thermal equilibrium. For that purpose, we let the pion decay constant be a time-dependent function and work within the Schwinger-Keldysh contour technique. A useful connection with curved space-time QFT allows to consistently renormalize the model, introducing two new low-energy constants in the chiral limit. We discuss the applicability of our approach within a Relativistic Heavy-Ion Collision environment. In… 
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