Neutron Star Matter EOS in RMF with Multi-Body Couplings
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Abstract
We investigate the multi-body coupling effects on the neutron star matter equation of state (EOS). By tuning the multi-body coupling constants in the relativistic mean field (RMF) models, microscopic EOSs are well fitted, and smaller neutron star radii R ∼ 12 km are obtained. When the repulsive potential for Λ at high density is assumed to have density dependence similar to that for nucleons, it is possible to support 2M☉ neutron stars by hyperonic EOSs, which do not contradict hypernuclear data.
The 14th International Symposium on Nuclei in the Cosmos (NIC2016), June 19-24, 2016, Niigata, Japan.
Journal
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- Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016)
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Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016), 2017
The Physical Society of Japan