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Chiral Symmetry and Scalar Meson in Hadron and Nuclear Physics

Teiji Kunihiro
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Abstract

After giving a short introduction to the Nambu-Jona-Lasinio model with an anomaly term, we show the importance of the scalar-scalar correlation in the low-energy hadron dynamics, which correlation may be summarized by a scalar-isoscalar meson, the sigma meson. The discussion is based on the chiral quark model with the sigma-meson degrees of freedom. Possible experiments are proposed to produce the elusive meson in a nucleus and detect it. In relation to a precursory soft mode for the chiral transition, the reason is clarified why the dynamic properties of the superconductor may be described by the diffusive time-dependent Ginzburg-Landau (TDGL) equation. We indicate the chiral symmetry plays a significant role also in nuclei; one may say that the stability of nuclei is due to the chiral symmetry of QCD.

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Teiji Kunihiro. 1995-02-15. Chiral Symmetry and Scalar Meson in Hadron and Nuclear Physics. https://doi.org/10.1143/ptps.120.75

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