Quark-meson coupling model, nuclear matter constraints, and neutron star properties

D. L. Whittenbury, J. D. Carroll, A. W. Thomas, K. Tsushima, and J. R. Stone

Phys. Rev. C 89, 065801 – Published 3 June 2014

Abstract

We explore the equation of state for nuclear matter in the quark-meson coupling model, including full Fock terms. The comparison with phenomenological constraints can be used to restrict the few additional parameters appearing in the Fock terms which are not present at the Hartree level. Because the model is based upon the in-medium modification of the quark structure of the bound hadrons, it can be readily extended to include hyperons and to calculate the equation of state of dense matter in $β$ equilibrium. This leads naturally to a study of the properties of neutron stars, including their maximum mass, radii, and density profiles.

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Received 19 July 2013
Revised 17 March 2014

DOI:https://doi.org/10.1103/PhysRevC.89.065801

Authors & Affiliations

D. L. Whittenbury, J. D. Carroll, and A. W. Thomas

CSSM and ARC Centre of Excellence for Particle Physics at the Terascale, School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia

K. Tsushima

CSSM and ARC Centre of Excellence for Particle Physics at the Terascale, School of Chemistry and Physics, University of Adelaide, Adelaide, South Australia 5005, Australia and International Institute of Physics, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte 59078-400, Brazil

J. R. Stone

Department of Physics, University of Oxford, Oxford OX13PU, United Kingdom and Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA

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Vol. 89, Iss. 6 — June 2014

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Physical Review C

covering nuclear physics