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arXiv · 1405.3847

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

Z. W. Zhang·H. Shen
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Abstract

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 $Y_p$, and baryon mass density $\rho_B$, 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 EOS.

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Z. W. Zhang, H. Shen. 2014-05-15. Relativistic equation of state at subnuclear densities in the Thomas-Fermi approximation. https://doi.org/10.1088/0004-637x/788/2/185

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