Effects of $\bm\la$ hyperons on the deformations of even-even nuclei

Abstract

The deformations of multi-$\la$ hypernuclei corresponding to even-even core nuclei ranging from ${}^8$Be to ${}^{40}$Ca with 2, 4, 6, and 8 hyperons are studied in the framework of the deformed Skyrme-Hartree-Fock approach. It is found that the deformations are reduced when adding 2 or 8 $\la$ hyperons, but enhanced when adding 4 or 6 $\la$ hyperons. These differences are attributed to the fact that $\la$ hyperons are filled gradually into the three deformed $p$ orbits, of which the [110]1/2${}^{-}$ orbit is prolately deformed and the degenerate [101]1/2${}^{-}$ and [101]3/2${}^{-}$ orbits are oblately deformed.

References in corpus (7)

• Deformation of Lambda hypernuclei
• Deformation of hypernuclei studied with antisymmetirzed molecular dynamics
• Five-body cluster structure of double-$\Lambda$ hypernucleus ${}_{\Lambda \Lambda }^{11}$Be
• Shape of Lambda hypernuclei in (beta,gamma) deformation plane
• Mean field approaches for ${\Xi }^{-}$ hypernuclei and current experimental data
• Clusterization and deformation of multi-$\Lambda$ hypernuclei within relativistic mean-field model
• Density Functional approach for multi-strange hypernuclei: competition between $\Lambda$ and ${\Xi }^{0,-}$ hyperons

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