Clusterization and deformation of multi-$\Lambda$ hypernuclei within relativistic mean-field model

Abstract

Deformed multi-$\Lambda$ hypernuclei are studied within a relativistic mean-field model. In this paper, we take some $N=Z$ "hyper isotope" chains, i.e., ${}_{n\Lambda }^{8+n}\mathrm{Be}$, ${}_{n\Lambda }^{20+n}\mathrm{Ne}$, and ${}_{n\Lambda }^{28+n}\mathrm{Si}$ systems where $n=2$, $4$ for Be, and $n=2$, $8$ for Ne and Si. A sign of two-${}_{2\Lambda }^6$He cluster structure is observed in the two-body correlation in ${}_{4\Lambda }^{12}$Be. In the Ne hyper isotopes, the deformation is slightly reduced by addition of $\Lambda$ hyperons whereas it is significantly reduced or even disappears in the Si hyper isotopes.

arXiv comment9 pages, 7 figures, to be submitted to Physical Review C

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Cited by in corpus (9)

• Toroidal states in ${}^{28}$Si with covariant density functional theory in 3D lattice space
• Strength of pairing interaction for hyperons in multistrangeness hypernuclei
• Effects of $\bm\la$ hyperons on the deformations of even-even nuclei
• Quenched Λ spin-orbit splitting by relativistic Fock diagram in single-Λ hypernuclei
• Visualization of nuclear many-body correlations with the most probable configuration of nucleons
• Local alpha-removal strength in the mean-field approximation
• Density-dependent relativistic mean field approach and its application to single-$\Lambda$ hypernuclei in Oxygen isotopes
• Impact of $\Xi$-Hypernuclear Constraints on Relativistic Equation of State and Properties of Hyperon Stars
• Tetrahedral shape and Lambda impurity effect in ${}^{80}$Zr with a multidimensionally constrained relativistic Hartree-Bogoliubov model