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arXiv · 0807.4627

The absence of fragmentation in Bose-Einstein condensates

A. D. Jackson·G. M. Kavoulakis·M. Magiropoulos
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Abstract

A Bose-Einstein condensate produced by a Hamiltonian which is rotationally or translationally symmetric is fragmented as a direct result of these symmetries. A corresponding mean-field unfragmented state, with an identical energy to leading order in the number of particles, can generally be constructed. As a consequence, vanishingly weak symmetry-breaking perturbations destabilize the fragmented state, which would thus be extremely difficult to realize experimentally, and lead to an unfragmented condensate.

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A. D. Jackson, G. M. Kavoulakis, M. Magiropoulos. 2008-07-29. The absence of fragmentation in Bose-Einstein condensates. https://doi.org/10.1103/physreva.78.063623

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