Correlations and spectral functions in asymmetric nuclear matter

Abstract

The self-energy of nucleons in asymmetric nuclear matter is evaluated employing different realistic models for the nucleon-nucleon interaction. Starting from the Brueckner Hartree Fock approximation without the usual angle-average in the two-nucleon propagator the effects of the hole-hole contributions are investigated within the self-consistent Green's function approach. Special attention is paid to the isospin-dependence of correlations, which can be deduced from the spectral functions of nucleons in asymmetric matter. The strong components of the proton - neutron interaction lead in neutron-rich matter to a larger depletion for the occupation probability of proton states below the Fermi momentum.

11 pages, 5 figures

References in corpus (18)

• Construction of high-quality Nucleon-Nucleon potential models
• Self-consistent Green's function method for nuclei and nuclear matter
• Two-Body Correlations in Nuclear Systems
• On the nuclear symmetry energy and the neutron skin in neutron-rich nuclei
• Asymmetric nuclear matter and neutron star properties
• 3P_2-3F_2 pairing in neutron matter with modern nucleon-nucleon potentials
• A Self-Consistent Solution to the Nuclear Many-Body Problem at Finite Temperature
• Nuclear Self-energy and Realistic Interactions
• Superfluid nuclear matter calculations
• The Nucleon Spectral Function at Finite Temperature and the Onset of Superfluidity in Nuclear Matter
• Pauli exclusion operator and binding energy of nuclear matter
• Correlations derived from Modern Nucleon-Nucleon Potentials
• Spectral function at high missing energies and momenta
• Minimal Relativity and ${}^3{S}_1$-${}^3{D}_1$ Pairing in Symmetric Nuclear Matter
• Short-range correlations in nuclear matter using Green's functions within a discrete pole approximation
• Muons and emissivities of neutrinos in neutron star cores
• Short-range correlations in asymmetric nuclear matter
• Collective Excitations and Ground State Correlations

Cited by in corpus (28)

• Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions
• The equation of state for dense nucleonic matter from a metamodeling. I. Foundational aspects
• Effective Nucleon Masses in Symmetric and Asymmetric Nuclear Matter
• Nucleon Effective Masses in Neutron-Rich Matter
• Correlations in Hot Asymmetric Nuclear Matter
• Momentum, Density, and Isospin dependence of the Symmetric and Asymmetric Nuclear Matter Properties
• The physics of dense hadronic matter and compact stars
• Constraints on the symmetry energy and its associated parameters from nuclei to neutron stars
• Constraints on the nuclear symmetry energy from asymmetric-matter calculations with chiral NN and 3N interactions
• In medium T-matrix for nuclear matter with three-body forces - binding energy and single particle properties
• Predicting the single-proton/neutron potentials in asymmetric nuclear matter
• Effective mass splitting of neutron and proton and isospin emission in heavy-ion collisions
• Three-body force effect on nucleon momentum distributions in asymmetric nuclear matter within the framework of the extended BHF approach
• Properties of asymmetric nuclear matter in different approaches
• Relativistic Effects in Nuclear Matter and Nuclei
• Nucleon momentum distributions in asymmetric nuclear matter
• Neutron-proton effective mass splitting in neutron-rich matter
• Proton-skins in momentum space and neutron-skins in coordinate space in heavy nuclei
• First measurement of the spectral function at high energy and momentum in medium-heavy nuclei
• Off-Shell Behavior of Nucleon Self-Energy in Asymmetric Nuclear Matter
• Three-body force effect on off-shell mass operator and spectral functions in nuclear matter
• Short Range Correlations and Spectral Functions in Asymmetric Nuclear Matter
• Correlations among symmetry energy elements in Skyrme models
• Isospin dependence of nucleon effective masses in neutron-rich matter
• Relativistic Effects in 3-Nucleon Forces for Nuclear Matter and Finite Nuclei
• A local-density-approximation description of high-momentum tails in isospin asymmetric nuclei
• Origins and Impacts of High-Density Symmetry Energy
• Proton spectral functions in finite nuclei based on the extended Brueckner-Hartree-Fock approach