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arXiv · 1504.07706

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

Masahiro Ishii·Takahiro Sasaki·Kouji Kashiwa·Hiroaki Kouno·Masanobu Yahiro
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Abstract

Temperature dependence of pion and sigma-meson screening masses is evaluated by the Polyakov-loop extended Nambu--Jona-Lasinio model with the entanglement vertex (EPNJL model). We propose a practical way of calculating meson screening masses in the NJL-type effective models. The method based on the Pauli-Villars regularization solves the well-known difficulty that the evaluation of screening masses is not easy in the NJL-type effective models. The method is applied to analyze temperature dependence of pion screening masses calculated with state-of-the-art lattice simulations with success in reproducing the lattice QCD results. We predict the temperature dependence of pole mass by using EPNJL model.

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Masahiro Ishii, Takahiro Sasaki, Kouji Kashiwa, Hiroaki Kouno, Masanobu Yahiro. 2015-04-29. Temperature dependence of meson screening masses; a comparison of effective model with lattice QCD. https://arxiv.org/abs/1504.07706

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