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

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.

preprint2010arXivOpen access
K. TsubakiharaH. MaekawaH. MatsumiyaA. Ohnishi
nucl-th
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Open access4 authors1 topic
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K. TsubakiharaH. MaekawaH. MatsumiyaA. Ohnishi

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