Three-body couplings in RMF and its effects on hyperonic star equation of state
arXiv:1211.7208 · doi:10.1016/j.nuclphysa.2013.04.006
Abstract
We develop a new relativistic mean field (RMF) model including explicit three-body couplings and apply it to hyperonic systems and neutron star matter. The recent observation of the massive mass neutron star has given us a puzzle; when strange hadrons including hyperons are taken into account, the equation of state (EOS) becomes too soft to support the observed two-solar-mass neutron star. Three-baryon repulsion is a promising ingredient to answer this puzzle. We demonstrate that it is possible to consistently explain the massive neutron star and hypernuclear data when we include three-body couplings and modify the hyperon vector couplings from the flavor SU(3) values.
4 pages, 6 figures, HYP2012 proceedings
References in corpus (1)
Cited by in corpus (10)
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- Extended quark mean-field model for neutron stars
- Hyperonization in compact stars
- Isothermal compressibility and effects of multi-body molecular interactions in a strongly interacting ultracold Fermi gas
- Equation of state for hyperonic neutron-star matter in SU(3) flavor symmetry
- Structure of hypernuclei in relativistic approaches
- Effects of three-baryon forces on kaon condensation in hyperon-mixed matter