Tensor correlations in ${}^4$He and ${}^8$Be with antisymmetrized quasi cluster model

Abstract

In this paper, we extend the framework of improved version of simplified method to take into account the tensor contribution ($i$SMT) and propose AQCM-T, tensor version of antisymmetrized quasi cluster model (AQCM). Although AQCM-T is phenomenological, we can treat the ${}^{3}S$-${}^{3}D$ coupling in the deuteron-like $T=0$ $NN$-pair induced by the tensor interaction in a very simplified way, which allows us to proceed to heavier nuclei. Also we propose a new effective interaction, V2m, where the triplet-even channel of the Volkov No.2 interaction is weakened to 60% so as to reproduce the binding energy of ${}^4$He after including the tensor term of a realistic interaction. Using AQCM-T and the new interaction, the significant tensor contribution in ${}^4$He is shown, which is almost comparable the central interaction, where $D$-state mixes by 8% to the major $S$-state. The AQCM-T model with the new interaction is also applied to ${}^8$Be. It is found that the tensor suppression gives significant contribution to the short-range repulsion between two α clusters.

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Cited by in corpus (5)

• High-momentum components in the ${}^4$He nucleus caused by inter-nucleon correlations
• Contact representation of short range correlation in light nuclei studied by the High-Momentum Antisymmetrized Molecular Dynamics
• The tensor-optimized high-momentum antisymmetrized molecular dynamics with bare interaction and its application in ${}^4$He nucleus
• Role of Tensor Interaction as Salvation of Cluster Structure in ${}^{44}$Ti
• Towards modeling cluster structure of ${}^8$Be with chiral interaction