Deformation of hypernuclei studied with antisymmetrized molecular dynamics

Abstract

An extended version of antisymmetrized molecular dynamics was developed to study the structure of p-sd shell hypernuclei. By using an effective ΛN interaction, we investigated the energy curves of Λ9Be, Λ13C, and 20, Λ21Ne as a function of nuclear quadrupole deformation. The changes to nuclear deformation caused by Λ particles are discussed. We found that Λ in the p wave enhances nuclear deformation, while that in the s wave reduces it. This effect is most prominent in Λ13C. The possibility of parity inversion in Λ20Ne is also examined. © 2011 American Physical Society.