Linear sigma model with parity doubling
- 1 May 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 39 (9), 2805-2808
- https://doi.org/10.1103/physrevd.39.2805
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.Keywords
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