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Temperature dependence of pion and sigma-meson screening masses is evaluatedby the Polyakov-loop extended Nambu--Jona-Lasinio model with the entanglementvertex (EPNJL model). We propose a practical way of calculating meson screeningmasses in the NJL-type effective models. The method based on the Pauli-Villarsregularization solves the well-known difficulty that the evaluation ofscreening masses is not easy in the NJL-type effective models. The method isapplied to analyze temperature dependence of pion screening masses calculatedwith state-of-the-art lattice simulations with success in reproducing thelattice QCD results. We predict the temperature dependence of pole mass byusing EPNJL model.

Temperature dependence of meson screening masses; a comparison of effective model with lattice QCD