Elementary excitations of a Bose-Einstein condensate in an effective magnetic field

D. R. Murray; Stephen M. Barnett; Patrik Ohberg; Damià Gomila

doi:10.1103/PhysRevA.76.053626

Elementary excitations of a Bose-Einstein condensate in an effective magnetic field

D. R. Murray, Stephen M. Barnett, Patrik Ohberg, Damià Gomila

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Abstract

We calculate the low-energy elementary excitations of a Bose-Einstein condensate in an effective magnetic field. The field is created by the interplay between light beams carrying orbital angular momentum and the trapped atoms. We examine the role of the homogeneous magnetic field, familiar from studies of rotating condensates, and also investigate spectra for vector potentials with a more general radial dependence. We discuss the instabilities which arise and how these may be manifested. © 2007 The American Physical Society.

Original language	English
Article number	053626
Journal	Physical Review A
Volume	76
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.76.053626
Publication status	Published - 29 Nov 2007

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10.1103/PhysRevA.76.053626

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abstract = "We calculate the low-energy elementary excitations of a Bose-Einstein condensate in an effective magnetic field. The field is created by the interplay between light beams carrying orbital angular momentum and the trapped atoms. We examine the role of the homogeneous magnetic field, familiar from studies of rotating condensates, and also investigate spectra for vector potentials with a more general radial dependence. We discuss the instabilities which arise and how these may be manifested. {\textcopyright} 2007 The American Physical Society.",

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N2 - We calculate the low-energy elementary excitations of a Bose-Einstein condensate in an effective magnetic field. The field is created by the interplay between light beams carrying orbital angular momentum and the trapped atoms. We examine the role of the homogeneous magnetic field, familiar from studies of rotating condensates, and also investigate spectra for vector potentials with a more general radial dependence. We discuss the instabilities which arise and how these may be manifested. © 2007 The American Physical Society.

AB - We calculate the low-energy elementary excitations of a Bose-Einstein condensate in an effective magnetic field. The field is created by the interplay between light beams carrying orbital angular momentum and the trapped atoms. We examine the role of the homogeneous magnetic field, familiar from studies of rotating condensates, and also investigate spectra for vector potentials with a more general radial dependence. We discuss the instabilities which arise and how these may be manifested. © 2007 The American Physical Society.

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Elementary excitations of a Bose-Einstein condensate in an effective magnetic field

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