TY - GEN
T1 - Complete equation of state for neutron stars using the relativistic Hartree-Fock approximation
AU - Miyatsu, Tsuyoshi
AU - Yamamuro, Sachiko
AU - Nakazato, Ken'ichiro
AU - Cheoun, Myung Ki
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84903181016&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84903181016&partnerID=8YFLogxK
U2 - 10.1063/1.4874104
DO - 10.1063/1.4874104
M3 - Conference contribution
AN - SCOPUS:84903181016
SN - 9780735412286
T3 - AIP Conference Proceedings
SP - 420
EP - 425
BT - Origin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013
PB - American Institute of Physics Inc.
T2 - 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013
Y2 - 18 November 2013 through 21 November 2013
ER -