Soft Modes associated with Chiral Transition at Finite Temperature
S. Chiku, T. Hatsuda
Abstract
Using a novel resummation procedure of thermal loops, real-time correlations in the scalar and pseudo-scalar channels are studied in the O(4) linear sigma model at finite temperature. A threshold enhancement of the spectral function in the scalar channel is shown to be a noticeable precritical phenomenon of the chiral phase transition.
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