Nucleon-pair approximation with matrix representation
arXiv:2011.05077 · doi:10.1088/1674-1137/abe3ed
Abstract
In this paper, we propose an approach of the nucleon-pair approximation (NPA), in which the collective nucleon pairs are represented in terms of antisymmetric matrices, and commutations between nucleon pairs are given by using matrix multiplication that avoids angular-momentum couplings and recouplings. Therefore the present approach significantly simplifies the NPA computation. Furthermore, it is formulated on the same footing with and without isospin.
11 pages, 2 figures