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arXiv · 1511.02957

Generator coordinate method for hypernuclear spectroscopy with a covariant density functional

H. Mei·K. Hagino·J. M. Yao
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Abstract

We apply the generator coordinate method (GCM) to single-$Λ$ hypernuclei in order to discuss the spectra of hypernuclear low-lying states. To this end, we use the same relativistic point-coupling energy functional both for the mean-field and the beyond-mean-field calculations. This relativistic GCM approach provides a unified description of low-lying states in ordinary nuclei and in hypernuclei, and is thus suitable for studying the $Λ$ impurity effect. We carry out an illustrative calculation for the low-lying spectrum of $^{21}_Λ$Ne, in which the interplay between the hypernuclear collective excitations and the single-particle excitations of the unpaired $Λ$ hyperon is taken into account in a full microscopic manner.

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H. Mei, K. Hagino, J. M. Yao. 2015-11-10. Generator coordinate method for hypernuclear spectroscopy with a covariant density functional. https://doi.org/10.1103/physrevc.93.011301

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