Deformation of Λ hypernuclei
Deformation of Λ hypernuclei
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DOI：
10.1103/physrevc.78.054311
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发表时间：
2008-08
影响因子：
3.1
通讯作者：
M. T. Win;K. Hagino
中科院分区：
文献类型：
--
作者：
M. T. Win;K. Hagino
利用相对论平均场方法研究了{lambda}超核的形变性质。我们发现，{sub {lambda}}{sup 29}Si和{sub {lambda}}{sup 13}C超核由于附加的{lambda}粒子而具有球形，而相应的核心核{sup 28}Si和{sup 12}C则是扁形变的。大多数其他超核有一个类似的变形参数的核心核，根据以前的研究与非相对论Skyrme-Hartree-Fock方法。我们讨论了我们的结果对配对相互作用的选择和RMF拉格朗日参数集的敏感性。
We study the deformation property of {lambda} hypernuclei using the relativistic mean-field (RMF) method. We find that {sub {lambda}}{sup 29}Si and {sub {lambda}}{sup 13}C hypernuclei have a spherical shape as a consequence of the additional {lambda} particle, whereas the corresponding core nuclei, {sup 28}Si and {sup 12}C, are oblately deformed. Most other hypernuclei have a similar deformation parameter to the core nucleus, in accordance with the previous study with the nonrelativistic Skyrme-Hartree-Fock method. We discuss the sensitivity of our results to the choice of pairing interaction and to the parameter set of the RMF Lagrangian.