Multi-antikaonic nuclei in the relativistic mean-field theory

Abstract

Properties of multi-antikaonic nuclei (MKN), where several numbers of $K^{-}$ mesons are bound, are studied in the relativistic mean-field model, combined with chiral dynamics for kaonic part of the thermodynamic potential. The density profiles for nucleons and $K^{-}$ mesons, the single particle energy of the $K^{-}$ mesons, and binding energy of the MKN are obtained. The effects of the $\bar{K}-\bar{K}$ interactions on these quantities are discussed in comparison with other meson ($\sigma$, $\omega$, and $\rho$)-exchange models. It is shown that the $\bar{K}-\bar{K}$ interactions originate from two contributions: One is the contact interaction between antikaons inherent in chiral symmetry, and the other is the one generated through coupling between the $K^{-}$ and meson mean fields. Both effects of the $\bar{K}-\bar{K}$ repulsive interactions become large on the ground state properties of the MKN as the number of the embedded $K^{-}$ mesons increases. A relation between the multi-antikaonic nuclei and kaon condensation in infinite and uniform matter is mentioned.

arXiv comment27 pages, 13 figures

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Cited by in corpus (8)

• Equation of state for neutron stars with hyperons and quarks in relativistic Hartree-Fock approximation
• Application of a coupled-channel Complex Scaling Method with Feshbach projection to the $K^{-}pp$ system
• Multi-$\bar{K}$ hypernuclei
• Comprehensive application of a coupled-channel complex scaling method to the KbarN-piY system
• Proton emission off nuclei induced by kaons in flight
• Pseudoscalar mesons from a PNJL model at zero temperature
• Effects of three-baryon forces on kaon condensation in hyperon-mixed matter
• Effects of the $\Lambda$(1405) on the Structure of Multi-Antikaonic Nuclei