Nucleon-pair approximation with matrix representation
Y. Lei, Y. Lu, and Y. M. Zhao
TL;DR
This paper introduces a matrix-based approach to the nucleon-pair approximation (NPA) that simplifies computations by representing collective nucleon pairs with antisymmetric matrices, applicable with or without isospin.
Contribution
The paper presents a novel matrix representation of nucleon pairs in NPA, reducing computational complexity and unifying the treatment with and without isospin.
Findings
Simplifies NPA computations using matrix multiplication
Eliminates the need for angular-momentum couplings
Applicable to systems with or without isospin
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.
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