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

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

2009-02-05

arxiv.org/abs/0902.0832v1

Phys.Rev.C79:034301,2009

Physics

Nuclear Physics

Nuclear Theory

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

Scientific paper

10.1103/PhysRevC.79.034301

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.

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