Journal
COMMUNICATIONS IN MATHEMATICAL PHYSICS
Volume 322, Issue 2, Pages 559-591Publisher
SPRINGER
DOI: 10.1007/s00220-013-1736-8
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- NSERC
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We investigate the low-energy excitation spectrum of a Bose gas confined in a trap, with weak long-range repulsive interactions. In particular, we prove that the spectrum can be described in terms of the eigenvalues of an effective one-particle operator, as predicted by the Bogoliubov approximation.
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