Improved method for partial-wave decomposition of two-pion exchange three-nucleon force

TL;DR

This paper introduces an improved, more efficient partial-wave decomposition method for calculating three-nucleon force matrix elements, significantly reducing computational effort and applicable to various few-body nuclear calculations.

Contribution

The paper presents a novel, simplified partial-wave decomposition technique that enhances computational efficiency for three-nucleon force calculations in nuclear physics.

Findings

Reduces computational effort by up to six times

Applicable to Faddeev-type and other partial-wave methods

Simplifies the evaluation of matrix elements

Abstract

In this article an efficient method to calculate the matrix elements of three-nucleon force is presented. The new method is improved version of partial-wave decomposition presented in Few-Body Syst. 22 (1997) 107, which simplifies expression to be evaluated and permits to reduce computational effort as much as six times. Proposed method naturally applies to Faddeev-type calculations but also can be used by any method relaying on partial-wave decomposition.