Linear sigma model with parity doubling
C DeTar, T Kunihiro - Physical Review D, 1989 - APS
Physical Review D, 1989•APS
Recent lattice-gauge-theory simulations at finite temperatures have suggested that chiral-
symmetry restoration at finite temperatures entails parity doubling of the baryon spectrum.
We show that a natural extension of the Gell-Mann–Lévy model incorporates this effect.
Predictions of this candidate effective model for the hadronic component of high-density and
high-temperature nuclear matter are discussed. The model suggests a parametrization of
the dependence of the baryon-doublet masses on the quark mass. This parametrization is …
symmetry restoration at finite temperatures entails parity doubling of the baryon spectrum.
We show that a natural extension of the Gell-Mann–Lévy model incorporates this effect.
Predictions of this candidate effective model for the hadronic component of high-density and
high-temperature nuclear matter are discussed. The model suggests a parametrization of
the dependence of the baryon-doublet masses on the quark mass. This parametrization is …
Abstract
Recent lattice-gauge-theory simulations at finite temperatures have suggested that chiral-symmetry restoration at finite temperatures entails parity doubling of the baryon spectrum. We show that a natural extension of the Gell-Mann–Lévy model incorporates this effect. Predictions of this candidate effective model for the hadronic component of high-density and high-temperature nuclear matter are discussed. The model suggests a parametrization of the dependence of the baryon-doublet masses on the quark mass. This parametrization is compared with the recent lattice results.
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