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

Understand

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.