The behavior of a Bose-Einstein ideal gas of particles in a three dimensional space in the presence of a uniform field, such as gravity, and of contact interaction, describing the presence of one impurity, is investigated. It is shown that Bose-Einstein condensation can not occur.

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arXiv:cond-mat/0007395 · Physics Letters A

Bose–Einstein condensation in the presence of an impurity

Paola Giacconi, Fabio Maltoni B, Roberto Soldati

Published Jan 1, 2001• 2 citations

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DOI: 10.1016/s0375-9601(00)00791-x

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if there is a pointlike impurity at the bottom of the vessel containing the gas.