Beyond the Gross-Pitaevskii Equation: Ground State and Low Energy Excitations for Trapped Bosons

Abstract

The results of a modified Gross-Pitaevskii equation for a system of Bose hard spheres trapped in a spherical harmonic potential are analyzed to study the validity regime of the standard GP equation.

10 pages, TeX. Proceedings of CMT XXIV, Buenos Aires, 2000