TENSOR CORRELATION IN He AND Li ISOTOPES BASED ON TENSOR OPTIMIZED SHELL MODEL WITH UNITARY CORRELATION OPERATOR

We show the importance of the tensor correlation on the structures of He and Li isotopes. We develop the tensor optimized shell model (TOSM) to describe the strong tensor correlation of the nuclear force in nuclei. We investigate the exotic structures of Li-9,Li-10,Li-11 based on the Li-9+n+n model where TOSM is used for Li-9. The coupling between the tensor correlation in Li-9 and the extra two neutrons emerges Pauli-blocking, which increases the s(2) component and develops the halo structure in Li-11. We further treat the short range repulsion of the nuclear force by the unitary correlation operator method (UCOM), while the tensor correlation is described by TOSM. We propose a new approach of TOSM+UCOM to describe nuclei from the nuclear force.