Improvement to Generalized Separable Expansion Method in Lippmann-Schwinger Equation

Abstract

Realistic nucleon-nucleon (NN) potentials are generally not in separable form, but there is a way to convert them into separable potentials, called the generalized separable expansion (GSE). When the separable potential is substituted into a three-body Faddeev equation, which generally has two Jacobi momenta, the integral equation is conveniently reduced to a one-variable integral equation. The two-body scattering t-matrix of the conventional GSE does not have an exact singularity at the energy threshold of the two-body bound state. The newly introduced GSE improves this by treating the singularity analytically.

8pages, no figure

References in corpus (5)

• Benchmark Test Calculation of a Four-Nucleon Bound State
• Low momentum nucleon-nucleon potential and shell model effective interactions
• Complex Energy Method in 4-Body Faddeev-Yakubovsky Equations
• Low-momentum nucleon-nucleon interaction and its application to the few-nucleon systems
• Separability of a Low-Momentum Effective Nucleon-Nucleon Potential