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

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 $\kappa$ of $\bar{K}$ mesons for $\kappa >{\kappa }_{\mathrm{sat}}\sim 10$. 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.

21 pages, 8 figures, revised text and references

References in corpus (20)

• Composition and Structure of Protoneutron Stars
• Hyperon-rich Matter in Neutron Stars
• Phases of dense matter in neutron stars
• In-medium nuclear interactions of low-energy hadrons
• Properties of Strange Hadronic Matter in Bulk and in Finite Systems
• Faddeev calculation of a $K^{-}pp$ quasi-bound state
• Strange dibaryon resonance in the anti-KNN--piYN system
• $\bar{K}NN$ quasi-bound state and the $\bar{K}N$ interaction: coupled-channel Faddeev calculations of the $\bar{K}NN-\pi \Sigma N$ system
• Kaon Condensation and Dynamical Nucleons in Neutron Stars
• Recent Progress in Neutron Star Theory
• Kaon Condensation in Neutron Star Matter with Hyperons
• Kaon Condensation in Dense Stellar Matter
• $\bar{K}$ nuclear bound states in a dynamical model
• $K^{-}$ - nucleus relativistic mean field potentials consistent with kaonic atoms
• Invariant-Mass Spectroscopy for Condensed Single- and Double-\kbar Nuclear Clusters to be Formed as Residues in Relativistic Heavy-Ion Collisions
• Extended-soft-core Baryon-Baryon Model I. Nucleon-Nucleon Scattering (ESC04) Extended-soft-core Baryon-Baryon Model I. Nucleon-Nucleon Scattering (ESC04)
• Relativistic nuclear energy density functional constrained by low-energy QCD
• Widths of $\bar{K}$-nuclear deeply bound states in a dynamical model
• First observation of in-medium effects on phase space distributions of antikaons measured in proton-nucleus collisions
• Chiral SU(3) Dynamics and Antikaon-Nuclear quasibound States

Cited by in corpus (21)

• Strangeness in nuclear physics
• Realistic calculations of Kbar-N-N, Kbar-N-N-N, and Kbar-Kbar-N-N quasibound states
• Chirally motivated K^- nuclear potentials
• K${}^{-}$ absorption on two nucleons and ppK${}^{-}$ bound state search in the ${\Sigma }^0$p final state
• K^- nuclear potentials from in-medium chirally motivated models
• anti-K anti-K N molecule state in three-body calculation
• Calculations of $K^{-}$ nuclear quasi-bound states based on chiral meson-baryon amplitudes
• Antikaon interactions with nucleons and nuclei
• Kaonic atoms and in-medium $K^{-}N$ amplitudes
• 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
• Multi-antikaonic nuclei in the relativistic mean-field theory
• Constraints on the threshold K- nuclear potential from FINUDA (stopped K-, pi-) hypernuclear spectra
• High-density kaonic-proton matter (KPM) composed of Lambda* equiv K-p multiplets and its astrophysical connections
• ${\Lambda }^{\ast }(1405)$-matter: stable or unstable?
• Structure of eta' mesonic nuclei in a relativistic mean field theory
• Overview of Strangeness Nuclear Physics
• Relativistic symmetry breaking in light kaonic nuclei
• Antikaon-nucleus dynamics: from quasibound states to kaon condensation
• Old and New in Strangeness Nuclear Physics