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arXiv · 2103.00678

Role of unitary correlation operator on high-momentum antisymmetrized molecular dynamics using bare NN interaction for 3H and 4He

Qing Zhao·Masahiro Isaka·Takayuki Myo·Mengjiao Lyu·Hiroshi Toki·Hisashi Horiuchi·Hiroki Takemoto·Niu Wan
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Abstract

We extend the high-momentum antisymmetrized molecular dynamics (HMAMD) by incorporating the short-range part of the unitary correlation operator method (UCOM) as the variational method of finite nuclei. In this HMAMD+UCOM calculation of light nuclei, the HMAMD is mainly in charge of the tensor correlation with up to the four-body correlation, while the short-range correlation is further improved by using the UCOM. The binding energies of the 3H and 4He nuclei are calculated with this HMAMD+UCOM using the AV8' bare nucleon-nucleon (NN) interaction. The different roles of the short-range and tensor correlations from the HMAMD and UCOM are analyzed in the numerical results. Compared with the previous calculations based on the different variational methods, this newly extended HMAMD+UCOM method can almost provide the consistent results with the ab initio results.

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Qing Zhao, Masahiro Isaka, Takayuki Myo, Mengjiao Lyu, Hiroshi Toki, Hisashi Horiuchi, Hiroki Takemoto, Niu Wan. 2021-03-01. Role of unitary correlation operator on high-momentum antisymmetrized molecular dynamics using bare NN interaction for 3H and 4He. https://arxiv.org/abs/2103.00678

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