Complete equation of state for neutron stars using the relativistic Hartree-Fock approximation

Tsuyoshi Miyatsu, Sachiko Yamamuro, Ken'ichiro Nakazato, Myung Ki Cheoun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We construct the equation of state in a wide-density range for neutron stars within relativistic Hartree-Fock approximation. The properties of uniform and nonuniform nuclear matter are studied consistently. The tensor couplings of vector mesons to baryons due to exchange contributions (Fock terms) are included, and the change of baryon internal structure in matter is also taken into account using the quark-meson coupling model. The Thomas-Fermi calculation is adopted to describe nonuniform matter, where the lattice of nuclei and the neutron drip out of nuclei are considered. Even if hyperons exist in the core of a neutron star, we obtain the maximum neutron-star mass of 1.95M , which is consistent with the recently observed massive pulsar, PSR J1614-2230. In addition, the strange vector (φ) meson also plays a important role in supporting a massive neutron star.

Original languageEnglish
Title of host publicationOrigin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013
PublisherAmerican Institute of Physics Inc.
Pages420-425
Number of pages6
ISBN (Print)9780735412286
DOIs
Publication statusPublished - Jan 1 2014
Event12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013 - Tsukuba, Japan
Duration: Nov 18 2013Nov 21 2013

Publication series

NameAIP Conference Proceedings
Volume1594
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013
CountryJapan
CityTsukuba
Period11/18/1311/21/13

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Miyatsu, T., Yamamuro, S., Nakazato, K., & Cheoun, M. K. (2014). Complete equation of state for neutron stars using the relativistic Hartree-Fock approximation. In Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013 (pp. 420-425). (AIP Conference Proceedings; Vol. 1594). American Institute of Physics Inc.. https://doi.org/10.1063/1.4874104