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Title: Hot and dense homogeneous nucleonic matter constrained by observations, experiment, and theory

Abstract

We propose a new class of phenomenological equations of state for homogeneous matter for use in simulations of hot and dense matter in local thermodynamic equilibrium. We construct a functional form which respects experimental, observational, and theoretical constraints on the nature of matter in various density and temperature regimes. Our equation of state (EOS) matches (i) the virial coefficients expected from nucleon-nucleon scattering phase shifts, (ii) experimental measurements of nuclear masses and charge radii, (iii) observations of neutron star radii, (iv) theory results on the equation of state of neutron matter near the saturation density, and (v) theory results on the evolution of the EOS at finite temperatures near the saturation density. Our analytical model allows one to compute the variation in the thermodynamic quantities based on the uncertainties in the nature of the nucleon-nucleon interaction. Lastly, we perform a correction to ensure the equation of state is causal at all densities, temperatures, and electron fractions.

Authors:
 [1]; ORCiD logo [2];  [3]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Texas A & M Univ., College Station, TX (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1505303
Alternate Identifier(s):
OSTI ID: 1494220
Grant/Contract Number:  
AC05-00OR22725; SC0018232
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 99; Journal Issue: 2; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Du, Xingfu, Steiner, Andrew W., and Holt, Jeremy W.. Hot and dense homogeneous nucleonic matter constrained by observations, experiment, and theory. United States: N. p., 2019. Web. doi:10.1103/PhysRevC.99.025803.
Du, Xingfu, Steiner, Andrew W., & Holt, Jeremy W.. Hot and dense homogeneous nucleonic matter constrained by observations, experiment, and theory. United States. doi:10.1103/PhysRevC.99.025803.
Du, Xingfu, Steiner, Andrew W., and Holt, Jeremy W.. Mon . "Hot and dense homogeneous nucleonic matter constrained by observations, experiment, and theory". United States. doi:10.1103/PhysRevC.99.025803.
@article{osti_1505303,
title = {Hot and dense homogeneous nucleonic matter constrained by observations, experiment, and theory},
author = {Du, Xingfu and Steiner, Andrew W. and Holt, Jeremy W.},
abstractNote = {We propose a new class of phenomenological equations of state for homogeneous matter for use in simulations of hot and dense matter in local thermodynamic equilibrium. We construct a functional form which respects experimental, observational, and theoretical constraints on the nature of matter in various density and temperature regimes. Our equation of state (EOS) matches (i) the virial coefficients expected from nucleon-nucleon scattering phase shifts, (ii) experimental measurements of nuclear masses and charge radii, (iii) observations of neutron star radii, (iv) theory results on the equation of state of neutron matter near the saturation density, and (v) theory results on the evolution of the EOS at finite temperatures near the saturation density. Our analytical model allows one to compute the variation in the thermodynamic quantities based on the uncertainties in the nature of the nucleon-nucleon interaction. Lastly, we perform a correction to ensure the equation of state is causal at all densities, temperatures, and electron fractions.},
doi = {10.1103/PhysRevC.99.025803},
journal = {Physical Review C},
issn = {2469-9985},
number = 2,
volume = 99,
place = {United States},
year = {2019},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on February 11, 2020
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