Condensates and Correlated Boson Systems

摘要

We study two-body correlations in a many-boson system with a hy-perspherical approach, where we can use arbitrary scattering length and include two-body bound states. As a special application we look on Bose-Einstein condensation and calculate the stability criterium in a comparison with the experimental criterium and the theoretical criterium from the Gross-Pitaevskii equation.