Solution of few - body problems with the stochastic variational method : I . Central forces

This paper presents a fortran program to solve diverse few-body problems with the stochastic variational method. Depending on the available computational resources the program is applicable for N = 2 − 3 − 4 − 5 − 6 − ...-body systems with L = 0 total orbital momentum. The solution with the stochastic variational method is " automatic " and universal. One defines the system (number of particles, masses, symmetry, interaction, etc.) and the program finds the ground state energy and wave function. The examples include nuclear (alpha particle: four-body, 6 He: six-body), atomic (tdµ − and e + e − e + e −) and subnuclear (the nucleon and the delta in a nonrelativistic quark model) systems. The solutions are accurate for excited states as well, and even the Efimov-states can be studied. The program is available from the author (