High-energy behavior of the nuclear symmetry potential in asymmetric nuclear matter

Abstract

Using the relativistic impulse approximation with empirical NN scattering amplitude and the nuclear scalar and vector densities from the relativistic mean-field theory, we evaluate the Dirac optical potential for neutrons and protons in asymmetric nuclear matter. From the resulting Schrö% dinger-equivalent potential, the high energy behavior of the nuclear symmetry potential is studied. We find that the symmetry potential at fixed baryon density is essentially constant once the nucleon kinetic energy is greater than about 500 MeV. Moreover, for such high energy nucleon, the symmetry potential is slightly negative below a baryon density of about fm${}^{-3}$ and then increases almost linearly to positive values at high densities. Our results thus provide an important constraint on the energy and density dependence of nuclear symmetry potential in asymmetric nuclear matter.

arXiv comment6 pages, 5 figures, revised version, to appear in PRC

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Cited by in corpus (27)

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• Isospin-dependent properties of asymmetric nuclear matter in relativistic mean-field models
• Modelization of the EOS
• Momentum, Density, and Isospin dependence of the Symmetric and Asymmetric Nuclear Matter Properties
• Single-nucleon potential decomposition of the nuclear symmetry energy
• Why is the nuclear symmetry energy so uncertain at supra-saturation densities?
• Analytical relations between nuclear symmetry energy and single-nucleon potentials in isospin asymmetric nuclear matter
• Isospin dependent kaon and antikaon optical potentials in dense hadronic matter
• Kaons and antikaons in asymmetric nuclear matter
• Probing isospin- and momentum-dependent nuclear effective interactions in neutron-rich matter
• Effects of isospin and momentum dependent interactions on thermal properties of asymmetric nuclear matter
• Kaon properties in (proto)neutron stars
• Extracting the nuclear symmetry potential and energy from neutron-nucleus scattering data
• An improved single particle potential for transport model simulations of nuclear reactions induced by rare isotope beams
• Temperature and momentum dependence of single-particle properties in hot asymmetric nuclear matter
• Nuclear symmetry potential in the relativistic impulse approximation
• Extended Skyrme interactions for transport model simulations of heavy-ion collisions
• Neutron-proton effective mass splitting in neutron-rich matter and its impacts on nuclear reactions
• A phenomenological equation of state for isospin asymmetric nuclear matter
• Imprints of Nuclear Symmetry Energy on Properties of Neutron Stars
• Probing Nuclear Symmetry Energy and its Imprints on Properties of Nuclei, Nuclear Reactions, Neutron Stars and Gravitational Waves
• Relationship between the symmetry energy and the single-nucleon potential in isospin-asymmetric nucleonic matter
• Mean free paths and in-medium scattering cross sections of energetic nucleons in neutron-rich nucleonic matter within the relativistic impulse approximation
• Effects of density-dependent scenarios of in-medium nucleon-nucleon interactions in heavy-ion collisions
• Symmetry potentials and in-medium nucleon-nucleon cross sections within the Nambu-Jona-Lasinio model in relativistic impulse approximation
• Origins and Impacts of High-Density Symmetry Energy