The possible shape coexistence in even-even Ne isotopes and the impurity effects of the s_Λ and p_Λ hyperons are explored employing the multidimensionally constrained relativistic-mean-field (MDC-RMF) model with the PK1 parameter set for the NN interaction and PK1-Y1 for the ΛN interaction. The quadrupole deformation potential energy surfaces (PESs), nuclear deformations, nuclear radii, binding energies, and density distributions of the hypernuclei and core nuclei are examined. The possible shape coexistence in ^24,26,28Ne is predicted with small energy differences of 140, 336, and 128 keV, respectively, between the two local energy minima. Different impurity effects of the s_Λ and p_Λ hyperons are revealed. The s_Λ hyperon exhibits clear shrinkage effects, which reduce the nuclear size and facilitate a spherical nuclear shape. The prolate p_Λ hyperon on the 1/2⁻[110] orbital renders the nuclear shape more prolate, while the oblate p_Λ hyperon on the 3/2⁻[101] or 1/2⁻[101] orbital renders the nuclei more oblate. Moreover, the Λ hyperon can increase the probabilities of the shape coexistence by reducing the energy differences between the two local energy minima, although the shape coexistence may disappear owing to the vanishment of one energy minimum on the flat energy surface.

使用多维约束相对论平均场 (MDC-RMF) 模型探索偶数 Ne 同位素中可能的形状共存以及s _Λ和p _Λ超子的杂质效应，其中 PK1 参数集用于NN相互作用和 PK1 -Y1 表示 Λ N相互作用。检查了超核和核心核的四极变形势能面 (PES)、核变形、核半径、结合能和密度分布。预测^24、26、28 Ne 中可能的形状共存，两个局部能量最小值之间的能量差异分别为^140、336和 128 keV。不同杂质的影响揭示了s _Λ和p _Λ超子。所述š _Λ超子表现出清晰的收缩效应，这降低了核的大小，并促进球形核的形状。1/2 ^- [110] 轨道上的扁长p _Λ超子使核形状更加扁长，而3/2 ^- [101] 或 1/2 ^-轨道上的扁p _Λ超子[101] 轨道使原子核更扁。此外，Λ 超子可以通过减少两个局部能量最小值之间的能量差异来增加形状共存的概率，尽管由于平坦能量表面上一个能量最小值的消失，形状共存可能会消失。