Relativistic Chiral Hartree-Fock description of nuclear matter with constraints from nucleon structure and confinement

Abstract

We present a relativistic chiral effective theory for symmetric and asymmetric nuclear matter taken in the Hartree-Fock scheme. The nuclear binding is insured by a background chiral invariant scalar field associated with the radial fluctuations of the chiral quark condensate. Nuclear matter saturation is obtained once the scalar response of the nucleon generating three-body repulsive forces is incorporated. For these parameters related to the scalar sector and quark confinement mechanism inside the nucleon we make use of an analysis of lattice results on the nucleon mass evolution with the quark mass. The other parameters are constrained as most as possible by standard hadron and nuclear phenomenology. Special attention is paid to the treatment of the propagation of the scalar fluctuations. The rearrangement terms associated with in-medium modified mass and coupling constants are explicitly included to satisfy the Hugenholtz -Van Hove theorem. We point out the important role of the tensor piece of the rho exchange Fock term to reproduce the asymmetry energy of nuclear matter. We also discuss the isospin dependence of the Landau nucleon effective mass.

Submitted to Physical Review C

References in corpus (4)

• Shell Structure and $\rho$-Tensor Correlations in Density-Dependent Relativistic Hartree-Fock theory
• Cold uniform matter and neutron stars in the quark-mesons-coupling model
• QCD susceptibilities and nuclear matter saturation in a chiral theory: inclusion of pion loops
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Cited by in corpus (6)

• Comparison of different relativistic models applied to dense nuclear matter
• Contribution of the rho meson and quark sub-structure to the nuclear spin-orbit potential
• Relativistic Hartree-Fock Chiral Lagrangians with confinement, nucleon finite size and short-range effects
• Multinucleon excitations in neutrino-nucleus scattering: connecting different microscopic models for the correlations
• Applications of the Octet Baryon Quark-Meson Coupling Model to Hybrid Stars
• From QCD phenomenology to nuclear physics phenomenology: the chiral confining model