Low density expansion and isospin dependence of nuclear energy functional: comparison between relativistic and Skyrme models

Abstract

In the present work we take the non relativistic limit of relativistic models and compare the obtained functionals with the usual Skyrme parametrization. Relativistic models with both constant couplings and with density dependent couplings are considered. While some models present very good results already at the lowest order in the density, models with non-linear terms only reproduce the energy functional if higher order terms are taken into account in the expansion.

16 pages,6 figures,5 tables

References in corpus (4)

• Constraints on the high-density nuclear equation of state from the phenomenology of compact stars and heavy-ion collisions
• Density dependent hadronic models and the relation between neutron stars and neutron skin thickness
• From self-consistent covariant effective field theories to their Galilean-invariant counterparts
• Constraining the Skyrme effective interactions and the neutron skin thickness of nuclei using isospin diffusion data from heavy ion collisions

Cited by in corpus (6)

• Relativistic Mean-Field Hadronic Models under Nuclear Matter Constraints
• The pasta phase within density dependent hadronic models
• Stellar matter with a strong magnetic field within density-dependent relativistic models
• Cluster formation in compact stars: relativistic versus Skyrme models
• Low-Density Instability of Multi-Component Matter with Trapped Neutrinos
• Temperature dependence of nuclear matter generalized isovector symmetry energy with Skyrme-type interactions