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Confined Quantum Systems: Beyond Harmonic Order in Dimensional Perturbation Theory
(2008)
We generalize the harmonic-order N-body DPT method for an isotropically confined quantum system of identical interacting bosons to first-anharmonic order and, in principle, higher orders. We introduce a graphical decomposition ...
Many-body dimensional perturbation theory for quantum confined systems with a focus on atomic gas Bose-Einstein condensates.
(2003)
Feshbach resonances notwithstanding, most experimentally realized atomic-vapor condensates are dilute and are best described by the mean-field Gross-Pitaevskii equation. For this reason, we use dimensional scaling methods ...