Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2006-10-23
Physics
Condensed Matter
Other Condensed Matter
5 pages, 3 figures
Scientific paper
The many-body structure of high-lying excited states, including macroscopic quantum superpositions, of the gaseous double-well BEC is presented within the context of a multiconfigurational bosonic self-consistent field theory based upon underlying symmetry-broken one-body wave functions. To better understand our initial results, a model is constructed in the extreme Fock state limit, in which macroscopic quantum self-trapped and superposition states emerge in the many-body spectrum, striking a delicate balance between the degree of symmetry breaking, the effects of the condensate's mean field, and that of atomic correlation. It is found that, in general, the superposition state lies energetically below its related self-trapped counterpart. Furthermore, noticeably different spatial density profiles are associated with each type of excited state.
Masiello David J.
Reinhardt William P.
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