Relativistic Chiral Theory of Nuclear Matter and QCD Constraints

TL;DR

This paper develops a relativistic chiral theory of nuclear matter incorporating confinement effects, successfully describing nuclear saturation and asymmetry properties with parameters constrained by phenomenology and lattice data.

Contribution

It introduces a novel relativistic chiral framework that includes confinement effects and accurately models nuclear matter properties.

Findings

Achieves a good description of nuclear saturation.

Successfully models asymmetry properties with rho meson exchange.

Parameters are constrained by hadron phenomenology and lattice data.

Abstract

We present a relativistic chiral theory of nuclear matter which includes the effect of confinement. Nuclear binding is obtained with a chiral invariant scalar background field associated with the radial fluctuations of the chiral condensate Nuclear matter stability is ensured once the scalar response of the nucleon depending on the quark confinement mechanism is properly incorporated. All the parameters are fixed or constrained by hadron phenomenology and lattice data. A good description of nuclear saturation is reached, which includes the effect of in-medium pion loops. Asymmetry properties of nuclear matter are also well described once the full rho meson exchange and Fock terms are included.