Radiation of linear waves in the stationary flow of a Bose-Einstein condensate past an obstacle

Yu G. Gladush; G. A. El; A. Gammal; A. M. Kamchatnov

doi:10.1103/PhysRevA.75.033619

Radiation of linear waves in the stationary flow of a Bose-Einstein condensate past an obstacle

Yu G. Gladush^*, G. A. El, A. Gammal, A. M. Kamchatnov

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

Using stationary solutions of the linearized two-dimensional Gross-Pitaevskii equation, we describe the wave pattern occurring in the supersonic flow of a Bose-Einstein condensate past an obstacle. It is shown that these waves are generated outside the Mach cone. The developed analytical theory is confirmed by numerical simulations of the flow past body problem in the frame of the full nonstationary Gross-Pitaevskii equation. Relation of the developed theory with recent experiments is discussed.

Original language	English
Article number	033619
Number of pages	5
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	75
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevA.75.033619
Publication status	Published - 28 Mar 2007
Externally published	Yes

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AU - Gammal, A.

AU - Kamchatnov, A. M.

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AB - Using stationary solutions of the linearized two-dimensional Gross-Pitaevskii equation, we describe the wave pattern occurring in the supersonic flow of a Bose-Einstein condensate past an obstacle. It is shown that these waves are generated outside the Mach cone. The developed analytical theory is confirmed by numerical simulations of the flow past body problem in the frame of the full nonstationary Gross-Pitaevskii equation. Relation of the developed theory with recent experiments is discussed.

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Radiation of linear waves in the stationary flow of a Bose-Einstein condensate past an obstacle

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