Scalar sigma meson at finite temperature in nonlocal quark model
D. Blaschke, Yu. L. Kalinovsky, A. E. Radzhabov, M. K. Volkov
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. Mpi(T), fpi(T), Msigma(T) and Gammasigma -> pi pi(T) are considered above and below the deconfinement and chiral restoration transitions.
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