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 (SMT) and propose AQCM-T, tensor version of antisymmetrized quasi cluster model (AQCM). Although AQCM-T is phenomenological, we can treat the - coupling in the deuteron-like -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 He after including the tensor term of a realistic interaction. Using AQCM-T and the new interaction, the significant tensor contribution in He is shown, which is almost comparable the central interaction, where -state mixes by 8% to the major -state. The AQCM-T model with the new interaction is also applied to Be. It is found that the tensor suppression gives significant contribution to the short-range repulsion between two {\alpha} clusters.
Keywords
Cite
@article{arxiv.1805.10087,
title = {Tensor correlations in $^4$He and $^8$Be with antisymmetrized quasi cluster model},
author = {H. Matsuno and Y. Kanada-En'yo and N. Itagaki},
journal= {arXiv preprint arXiv:1805.10087},
year = {2018}
}