Massive Neutron Stars with Antikaon Condensates in a Density Dependent Hadron Field Theory - INSPIRE

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Massive Neutron Stars with Antikaon Condensates in a Density Dependent Hadron Field Theory

Jun 19, 2014

9 pages

Published in:

Phys.Rev.C 90 (2014) 1, 015801

Published: Jul 10, 2014

e-Print:

1406.4961 [astro-ph.HE]

DOI:

10.1103/PhysRevC.90.015801

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Abstract: (APS)

The measurement of 1.97±0.04Msolar for PSR J1614-2230 and 2.01±0.04Msolar for PSR J0348 + 0432 puts a strong constraint on the neutron star equation of state and its exotic composition at higher densities. In this paper, we investigate the possibility of an exotic equation of state within the observational mass constraint of 2Msolar in the framework of relativistic mean field model with density-dependent couplings. We particularly study the effect of antikaon condensates in the presence of hyperons on the mass-radius relationship of the neutron star.

Note:

6 figures, submitted to Phy. Rev. C

26.60.Kp
14.20.Jn
neutron star: massive
mean field approximation: relativistic
coupling: density dependence
hadron: field theory
mass: constraint
density: high
solar
equation of state

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