Scalar sigma meson at finite temperature in nonlocal quark model

Abstract

Properties and temperature behavior of pi and sigma bound states are studied in the framework of the nonlocal model with a separable interaction kernel based on the quark Dyson-Schwinger and the meson Bethe-Salpeter equations. M_pi(T), f_pi(T), M_sigma(T) and Gamma_{sigma -> pi pi}(T) are considered above and below the deconfinement and chiral restoration transitions.

arXiv comment8 pages, 2 figures, Talk at the Round Table Discussion "Searching for the mixed phase of strongly interacting matter at the JINR Nuclotron", JINR, Dubna, July 7 - 9, 2005. Submitted to Phys.Part.Nucl.Lett

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