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Title: Relativistic equation of state at subnuclear densities in the Thomas-Fermi approximation

We study the non-uniform nuclear matter using the self-consistent Thomas-Fermi approximation with a relativistic mean-field model. The non-uniform matter is assumed to be composed of a lattice of heavy nuclei surrounded by dripped nucleons. At each temperature T, proton fraction Y{sub p} , and baryon mass density ρ {sub B}, we determine the thermodynamically favored state by minimizing the free energy with respect to the radius of the Wigner-Seitz cell, while the nucleon distribution in the cell can be determined self-consistently in the Thomas-Fermi approximation. A detailed comparison is made between the present results and previous calculations in the Thomas-Fermi approximation with a parameterized nucleon distribution that has been adopted in the widely used Shen equation of state.
Authors:
;  [1]
  1. School of Physics, Nankai University, Tianjin 300071 (China)
Publication Date:
OSTI Identifier:
22356541
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 788; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; APPROXIMATIONS; COMPARATIVE EVALUATIONS; DENSITY; DISTRIBUTION; FREE ENERGY; MASS; MEAN-FIELD THEORY; NUCLEAR MATTER; PROTONS; RELATIVISTIC RANGE; SUPERNOVAE; THOMAS-FERMI MODEL