%0 Book Section
%T Nonequilibrium chiral perturbation theory and disoriented chiral condensates
publisher Amer Inst Physics
%D 1999
%U 1-56396-927-0
%@ https://hdl.handle.net/20.500.14352/60927
%X We analyse the extension of Chiral Perturbation Theory to describe a meson gas out of thermal equilibrium. For that purpose, se 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 renormalise 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 particular, we investigate the formation of Disoriented Chiral Condensate domains in this model, via the parametric resonance mechanism.
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