Lambda binding energies in the Skyrme-Hartree-Fock approach with various $Lambda N$ interactions
Lambda binding energies in the Skyrme-Hartree-Fock approach with various $Lambda N$ interactions
复制标题
Skyrme-Hartree-Fock 方法中具有各种 $Lambda N$ 相互作用的 Lambda 结合能
DOI：
10.1140/epja/s10050-022-00672-3
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Cheng Y. Y.
中科院分区：
文献类型：
--
作者：
Chen Y. F.;Zhou X. R.;Chen Q. B.;Cheng Y. Y.
在Skyrme-Hartree-Fock(SHF)方法的框架下，系统地研究了(Lambda)超核从轻到重范围内的Lambda结合能(B_Lambda)。计算采用了NN相互作用SLy4和Ski4和各种(Lambda N)相互作用的组合，包括Skyrme型作用力和微观力。结果表明，与其他Skyrme型力相比，Skyrme型SLL4力和YMR力能更好地描述实验数据，而微观相互作用结果与实验数据略有偏差。此外，无论(Lambda N)相互作用如何，(Lambda)超子对形变的轻核确实存在收缩效应，而对重核则不存在。
The Lambda binding energies (B_Lambda ) of (Lambda ) hypernuclei ranging from light to heavy masses are investigated systematically in the framework of the Skyrme-Hartree-Fock (SHF) approach. Calculations are performed with the combinations of the NN interactions SLy4 and SkI4 and various (Lambda N) interactions, including the Skyrme-type forces and the microscopic forces. It is demonstrated that the Skyrme-type SLL4 and YMR forces can well describe the experimental data overall better compared to other Skyrme-type forces, while the microscopic interaction results deviate a bit from the experimental data. In addition, the shrinkage effects caused by (Lambda ) hyperon on the deformation indeed exist for the deformed light nuclei, while not for the heavy nuclei regardless of the (Lambda N) interactions.