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arXiv · 1007.3630

Chiral-particle Approach to Hadrons in an Extended Chiral ($\sigma,\pi,\omega$) Mean-Field Model

Schun T. Uechi·Hiroshi Uechi
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Abstract

The chiral nonlinear ($\sigma,\pi,\omega$) mean-field model is an extension of the conserving nonlinear (nonchiral) $\sigma$-$\omega$ hadronic mean-field model which is thermodynamically consistent, relativistic and Lorentz-covariant mean-field theory of hadrons. In the extended chiral ($\sigma,\pi,\omega$) mean-field model, all the masses of hadrons are produced by chiral symmetry breaking mechanism, which is different from other conventional chiral partner models. By comparing both nonchiral and chiral mean-field approximations, the effects of chiral symmetry breaking to the mass of $\sigma$-meson, coefficients of nonlinear interactions, coupling ratios of hyperons to nucleons and Fermi-liquid properties are investigated in nuclear matter, hyperonic matter, and neutron stars.

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Schun T. Uechi, Hiroshi Uechi. 2010-07-21. Chiral-particle Approach to Hadrons in an Extended Chiral ($\sigma,\pi,\omega$) Mean-Field Model. https://arxiv.org/abs/1007.3630

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