Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2012-03-31
Phys. Rev. C, 85 015804, 2012
Physics
Nuclear Physics
Nuclear Theory
10 pages, 11 figures
Scientific paper
10.1103/PhysRevC.85.015804
We discuss the role of higher order couplings in conjunction with kaon condensation using recent versions of relativistic mean field models.We focus on an interaction (G2) in which all the parameters are obtained by fitting the finite nuclear data and successfully applied to reproduce a variety of nuclear properties. Our results show that the higher order couplings play a significant role at higher densities where kaons dominate the behavior of the equation of state. We compare our results with other interactions (NLl, NL3, G1, and FSUGold) and show that the new couplings bring down the mass of a neutron star (NS), which is further reduced in the presence of kaons to yield results consistent with the present observational constraints. We show that the composition of the NS varies with the parameter sets.
Arumugam P.
Gupta Neha
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