Abstract
We compute the free energy of asymmetric nuclear matter in a Brueckner-Hartree-Fock approach at finite temperature, paying particular attention to the dependence on isospin asymmetry. The first- and second-order symmetry energies are determined as functions of density and temperature and useful parametrizations are provided. We find small deviations from the quadratic isospin-asymmetry dependence and very small corresponding effects on (proto)neutron star structure.
- Received 21 April 2020
- Revised 5 December 2020
- Accepted 19 January 2021
DOI:https://doi.org/10.1103/PhysRevC.103.024307
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