Effects of $\Lambda$ hyperons on the nuclear equation of state in a Dirac-Brueckner-Hartree-Fock model

Abstract

We predict the energy per baryon in nuclear matter with non-zero fraction of $\Lambda$ hyperons. We include Dirac effects on the nucleons as well as the $\Lambda$ and describe how the latter is implemented. We use the nucleon-hyperon meson-exchange potentials from the Juelich group, the latest as well as an earlier version. The dependence of the results on the many-body framework and on the nucleon-hyperon interaction model is discussed.

arXiv comment12 pages, 3 figures. Accepted for publication in Physical Review C

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• Thermodynamics of Neutrons in a Magnetic Field and its Implications for Neutron Stars
• The effect of isoscalar-isovector coupling in infinite nuclear matter
• Hyperons in Neutron Stars
• Quark matter contribution to the heat capacity of magnetized neutron stars
• The attribute of rotational profile to the hyperon puzzle in the prediction of heaviest compact star
• The impact of hyperons on neutron star mergers: gravitational waves, mass ejection and black hole formation
• Transport coefficients of hyperonic neutron star cores
• Equation of state for hyperonic neutron-star matter in SU(3) flavor symmetry