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Steiner AW, Gandolfi S. Connecting neutron star observations to three-body forces in neutron matter and to the nuclear symmetry energy. Phys Rev Lett. 2012;108(8):081102doi: 10.1103/PhysRevLett.108.081102.
Steiner, A. W., & Gandolfi, S. (2012). Connecting neutron star observations to three-body forces in neutron matter and to the nuclear symmetry energy. Physical review letters, 108(8), 081102. https://doi.org/10.1103/PhysRevLett.108.081102
Steiner, A W, and Gandolfi, S. "Connecting neutron star observations to three-body forces in neutron matter and to the nuclear symmetry energy." Physical review letters vol. 108,8 (2012): 081102. doi: https://doi.org/10.1103/PhysRevLett.108.081102
Steiner AW, Gandolfi S. Connecting neutron star observations to three-body forces in neutron matter and to the nuclear symmetry energy. Phys Rev Lett. 2012 Feb 24;108(8):081102. doi: 10.1103/PhysRevLett.108.081102. Epub 2012 Feb 22. PMID: 22463511.
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Phys Rev Lett. 2012 Feb 24;108(8):081102. doi: 10.1103/PhysRevLett.108.081102. Epub 2012 Feb 22.

Connecting neutron star observations to three-body forces in neutron matter and to the nuclear symmetry energy.

Physical review letters

A W Steiner, S Gandolfi

Affiliations

  1. Joint Institute for Nuclear Astrophysics, National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.

PMID: 22463511 DOI: 10.1103/PhysRevLett.108.081102

Abstract

Using a phenomenological form of the equation of state of neutron matter near the saturation density which has been previously demonstrated to be a good characterization of quantum Monte Carlo simulations, we show that currently available neutron star mass and radius measurements provide a significant constraint on the equation of state of neutron matter. At higher densities we model the equation of state by using polytropes and a quark matter model. We show that observations offer an important constraint on the strength of the three-body force in neutron matter, and thus some theoretical models of the three-body force may be ruled out by currently available astrophysical data. In addition, we obtain an estimate of the symmetry energy of nuclear matter and its slope that can be directly compared to the experiment and other theoretical calculations.

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