Tensor Correlation in ^4He with the Tensor-Optimized Shell Model(Nuclear Physics)

概要

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We study the characteristics of the tensor correlation in ^4He using a shell model type method. We treat the tensor force explicitly by performing a configuration-mixing calculation in the 2p2h basis and include single-particle states up to intermediately high angular momenta. We adopt the Gaussian expansion method for the quantitative description of the spatial shrinkage of the single-particle states to optimize the tensor correlation. We are able to describe the full strength of the tensor correlation for ^4He in the shell model type method by realizing convergence. We call this model the tensor-optimized shell model. It is found that in ^4He, three specific 2p2h configurations are strongly coupled with the (0s)^4 configuration due to the characteristic features of the tensor operator.
理論物理学刊行会の論文
2007-02-25