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• W3169367113 abstract "The energy spectra of light-mass kaonic nuclei were investigated using the theoretical framework of the $0s$-orbital model with zero-range $bar{K} N$ and $bar{K}bar{K}$ interactions of effective single-channel real potentials. The energies of the $bar{K} NN$, $bar{K} NNN$, $bar{K} NNNN$, $bar{K}bar{K} N$, and $bar{K}bar{K} NN$ systems were calculated in the cases of weak- and deep-binding of the $bar{K} N$ interaction, which was adjusted to fit the $Lambda(1405)$ mass with the energy of the $bar{K} N$ bound state. The results qualitatively reproduced the energy systematics of kaonic nuclei calculated via other theoretical approaches. In the energy spectra of the $bar{K} NN$ and $bar{K}bar{K} NN$ systems, the lowest states $bar{K} NN(J^pi,T=0^-,1/2)$ and $bar{K}bar{K} NN(0^+,0)$ were found to have binding energies approximately twice and four times as large as that of the $bar{K} N(1/2^-,0)$ state, respectively. Higher $(J^pi,T)$ states including $bar{K} NN(1^-,1/2)$, $bar{K}bar{K} NN(0^+,1)$, and $bar{K}bar{K} NN(1^+,1)$ were predicted at energies of 9--25 MeV below the antikaon-decay threshold. The effective $Lambda(1405)$-$Lambda(1405)$ interaction in the $bar{K}bar{K} N N$ system was also investigated via a $bar{K} N+bar{K} N$-cluster model. Strong and weak $Lambda(1405)$-$Lambda(1405)$ attractions were obtained in the $S^pi=0^+$ and $S^pi=1^-$ channels, respectively. The $Lambda(1405)$-$Lambda(1405)$ interaction in the $$bar{K}bar{K} NN$ system was compared with the effective $d$-$d$ interaction in the $NNNN$ system, and the properties of dimer-dimer interactions in hadron and nuclear systems were discussed." @default.
• W3169367113 created "2021-06-22" @default.
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• W3169367113 date "2021-06-01" @default.
• W3169367113 modified "2023-10-16" @default.
• W3169367113 title "Binding of antikaons and $$varLambda (1405)$$ clusters in light kaonic nuclei" @default.
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• W3169367113 doi "https://doi.org/10.1140/epja/s10050-021-00459-y" @default.
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