Title of Paper:Mesonic excitations and pi-pi scattering lengths at finite temperature in the two-flavor Polyakov-Nambu-Jona-Lasinio model

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Date of Publication:2009-04-13

Journal:Phys.Rev. D

Discipline:Natural Science

First-Level Discipline:Physics

Volume:79

Page Number:074011

Abstract:The mesonic excitations and s-wave pi--pi scattering lengths at finite temperature are studied in the two-flavor Polyakov--Nambu--Jona-Lasinio (PNJL) model. The masses of pi-meson and sigma-meson, pion-decay constant, the pion-quark coupling strength, and the scattering lengths a0 and a2 at finite temperature are calculated in the PNJL model with two forms of Polyakov-loop effective potential. The obtained results are almost independent of the choice of the effective potentials. The calculated results in the PNJL model are also compared with those in the conventional Nambu--Jona-Lasinio model

Note:arXiv:0904.2914 [hep-ph]，论文作者按贡献大小排序，*为通讯作者