Isospin Constraints on the Parametric Coupling Model for Nuclear Matter
Guilherme F. Marranghello, Constan\c{c}a Provid\^encia, and Alexandre, M. S. Santos
TL;DR
This paper uses isospin constraints to refine the parametric coupling model for asymmetric nuclear matter, analyzing properties like symmetry energy, phase transitions, and neutron star characteristics.
Contribution
It introduces isospin constraints to narrow down model parameters and applies these to study phase transitions and neutron star properties.
Findings
Parameters constrained to a small range by symmetry energy properties
Identified thermodynamic instabilities in liquid-gas phase transition
Analyzed neutron star configurations with refined model parameters
Abstract
We make use of isospin constraints to study the parametric coupling model and the properties of asymmetric nuclear matter. Besides the usual constraints for nuclear matter - effective nucleon mass and the incompressibility at saturation density - and the neutron star constraints - maximum mass and radius - we have studied the properties related with the symmetry energy. These properties have constrained to a small range the parameters of the model. We have applied our results to study the thermodynamic instabilities in the liquid-gas phase transition as well as the neutron star configurations.
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