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Auxiliary Field Meson Model at Finite Temperature and Density

H. Kouno·T. Sakaguchi·K. Kashiwa·M. Hamada·H. Tokudome·M. Matsuzaki·M. Yahiro
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Abstract

Starting from many quark interactions, we construct a nonlinear sigma-omega model at finite temperature and density. The mesons are introduced as auxiliary fields. Effective quark-meson couplings are strongly related to effective meson masses, since they are derived simultaneously from the original many quark interactions. In this model, even if the effective omega-meson mass decreases due to the partial chiral restoration, the equation of state (EOS) of nuclear matter can become soft.

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H. Kouno, T. Sakaguchi, K. Kashiwa, M. Hamada, H. Tokudome, M. Matsuzaki, M. Yahiro. 2005-09-22. Auxiliary Field Meson Model at Finite Temperature and Density. https://arxiv.org/abs/nucl-th/0509057

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