Excitations and phase segregation in a two component Bose-Einstein condensate

A. S. Alexandrov; V. V. Kabanov

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arXiv · cond-mat/0110596

Excitations and phase segregation in a two component Bose-Einstein condensate

A. S. Alexandrov·V. V. Kabanov

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Abstract

Bogoliubov-de Gennes (BdG) equations and the excitation spectrum of a two-component Bose-Einstein condensate (BEC) are derived with an arbitrary interaction between bosons, including long-range and short range forces. The nonconverting BEC mixture segregates into two phases for some two-body interactions. Gross-Pitaevskii (GP) equations are solved for the phase segregated BEC. A possibility of boundary-surface and other localised excitations is studied.

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A. S. Alexandrov, V. V. Kabanov. 2001-10-29. Excitations and phase segregation in a two component Bose-Einstein condensate. https://arxiv.org/abs/cond-mat/0110596

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