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arXiv · 0909.5058

Lambda hypernuclei and neutron star matter in a chiral SU(3) relativistic mean field model with a logarithmic potential

K. Tsubakihara·H. Maekawa·H. Matsumiya·A. Ohnishi
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Abstract

We develop a chiral SU(3) symmetric relativistic mean field (RMF) model with a logarithmic potential of scalar condensates. Experimental and empirical data of symmetric nuclear matter saturation properties, bulk properties of normal nuclei, and separation energies of single- and double-$Λ$ hypernuclei are well explained. The nuclear matter equation of state (EOS) is found to be softened by $σζ$ mixing which comes from determinant interaction. The neutron star matter EOS is further softened by $Λ$ hyperons.

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K. Tsubakihara, H. Maekawa, H. Matsumiya, A. Ohnishi. 2010-04-24. Lambda hypernuclei and neutron star matter in a chiral SU(3) relativistic mean field model with a logarithmic potential. https://doi.org/10.1103/physrevc.81.065206

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