Hyperon-nucleon three-body forces and strangeness in neutron stars

Abstract

Three-body forces acting on a $\Lambda$ hyperon in a nuclear medium are investigated, with special focus on the so-called hyperon puzzle in neutron stars. The hyperon-nucleon two-body interaction deduced from SU(3) chiral effective field theory is employed at next-to-leading order. Hyperon-nucleon three-body forces are approximated using saturation by decuplet baryons and are transcribed to density-dependent effective two-body interactions. These together are taken as input in a Brueckner-Bethe-Goldstone equation with explicit treatment of the $\Lambda N\leftrightarrow \Sigma N$ and $\Lambda NN\leftrightarrow \Sigma NN$ coupled channels. Single-particle potentials of a $\Lambda$ hyperon in symmetric nuclear matter and neutron matter are calculated. With parameters of the $\Lambda NN$ three-body force constrained by hypernuclear phenomenology, extrapolations to high baryon density are performed. By comparison of the $\Lambda$ and neutron chemical potentials at densities characteristic of the core of neutron stars it is found that the combined repulsive effects of two- and three-body correlations makes the appearance of $\Lambda$ hyperons in neutron stars energetically unfavourable, thus offering a possible solution to a longstanding question.

References in corpus (13)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• Hyperon Puzzle: Hints from Quantum Monte Carlo Calculations
• Estimation of the effect of hyperonic three-body forces on the maximum mass of neutron stars
• Hyperon mixing and universal many-body repulsion in neutron stars
• Cold uniform matter and neutron stars in the quark-mesons-coupling model
• Hyperon-nucleon interaction within chiral effective field theory revisited
• Impact of chiral hyperonic three-body forces on neutron stars
• Functional renormalization group studies of nuclear and neutron matter
• From asymmetric nuclear matter to neutron stars: a functional renormalization group study
• Hyperon-nuclear interactions from SU(3) chiral effective field theory
• Density-dependent effective baryon-baryon interaction from chiral three-baryon forces
• Neutron Star Matter as a Relativistic Fermi Liquid

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