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arXiv · 0801.3335

Multi-$\bar{K}$ nuclei and kaon condensation

D. Gazda·E. Friedman·A. Gal·J. Mareš
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Abstract

We extend previous relativistic mean-field (RMF) calculations of multi-$\bar K$ nuclei, using vector boson fields with SU(3) PPV coupling constants and scalar boson fields constrained phenomenologically. For a given core nucleus, the resulting $\bar K$ separation energy $B_{\bar K}$, as well as the associated nuclear and $\bar K$-meson densities, saturate with the number $κ$ of $\bar K$ mesons for $κ> κ_{\rm sat} \sim 10$. Saturation appears robust against a wide range of variations, including the RMF nuclear model used and the type of boson fields mediating the strong interactions. Because $B_{\bar K}$ generally does not exceed 200 MeV, it is argued that multi-$\bar K$ nuclei do not compete with multihyperonic nuclei in providing the ground state of strange hadronic configurations and that kaon condensation is unlikely to occur in strong-interaction self-bound strange hadronic matter. Last, we explore possibly self-bound strange systems made of neutrons and ${\bar K}^0$ mesons, or protons and $K^-$ mesons, and study their properties.

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D. Gazda, E. Friedman, A. Gal, J. Mareš. 2008-05-05. Multi-$\bar{K}$ nuclei and kaon condensation. https://doi.org/10.1103/physrevc.77.045206

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