In this work, a direct solution to the few-body Integrodi erential equation using the Lagrange-mesh method is presented. With the Lagrange-mesh method, the few-body Integrodi erential equation is converted into a matrix ...

The few-body integrodifferential equations are approximations to the few-body Schr¨odinger equation in hyperspherical coordinates. The few-body integrodifferential equations for identical particles reduce to a single ...