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arXiv · 1511.06466

Topological Susceptibility in Three-Flavor Quark Meson Model at Finite Temperature

Yin Jiang·Tao Xia·Pengfei Zhuang
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Abstract

We study $U_A(1)$ symmetry and its relation to chiral symmetry at finite temperature through the application of functional renormalization group to the $SU(3)$ quark meson model. Very different from the mass gap and mixing angel between $η$ and $η'$ mesons which are defined at mean field level and behavior like the chiral condensates, the topological susceptibility includes a fluctuations induced part which becomes dominant at high temperature. As a result, the $U_A(1)$ symmetry is still considerably broken in the chiral symmetry restoration phase.

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Yin Jiang, Tao Xia, Pengfei Zhuang. 2015-11-20. Topological Susceptibility in Three-Flavor Quark Meson Model at Finite Temperature. https://doi.org/10.1103/physrevd.93.074006

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