Quark-Pauli effects in three octet-baryons

Abstract

To sustain a neutron star with about two times the solar mass, multi baryons including hyperons are expected to produce repulsive effects in the interior of its high baryon-density region. To examine possible quark-Pauli repulsion among the baryons, we solve the eigenvalue problem of the quark antisymmetrizer for three octet-baryons that are described by most compact spatial configurations. We find that the Pauli blocking effect is weak in the $\Lambda nn$ system, while it is strong in the ${\Sigma }^{-}nn$ system. The appearance of the ${\Sigma }^{-}$ hyperon is suppressed in the neutron star interior but no quark-Pauli repulsion effectively works for the $\Lambda$ hyperon.

arXiv comment9 pages, plus 7 pages as Supplemental Material

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Cited by in corpus (3)

• Tidal deformability of neutron and hyperon star with relativistic mean field equations of state
• Effects of three-baryon forces on kaon condensation in hyperon-mixed matter
• Implications of nuclear interaction for nuclear structure and astrophysics within the relativistic mean-field model