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

Abstract

The measurement of $1.97\pm 0.04M_{solar}$ for PSR J1614-2230 and $2.01\pm 0.04M_{solar}$ 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 exotic equation of state within the observational mass constraint of $2M_{solar}$ 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.

6 figures, submitted to Phy. Rev. C

References in corpus (4)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• Relativistic model for nuclear matter and atomic nuclei with momentum-dependent self-energies
• Latest results for the antikaon-nucleon optical potential

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• Properties of binary components and remnant in GW170817 using equations of state in finite temperature field theory models
• Neutron Stars: Laboratories for fundamental physics under extreme astrophysical conditions