Formation of shock waves in a Bose-Einstein condensate

Details Formation of shock waves in a Bose-Einstein condensate Formation of shock waves in a Bose-Einstein condensate

2003-09-18

arxiv.org/abs/cond-mat/0309421v4

Phys.Rev. A69 (2004) 043610

Physics

Condensed Matter

Soft Condensed Matter

8 pages & 6 figures, minor changes, more references, to appear in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.69.043610

We consider propagation of density wave packets in a Bose-Einstein condensate. We show that the shape of initially broad, laser-induced, density perturbation changes in the course of free time evolution so that a shock wave front finally forms. Our results are well beyond predictions of commonly used zero-amplitude approach, so they can be useful in extraction of a speed of sound from experimental data. We discuss a simple experimental setup for shock propagation and point out possible limitations of the mean-field approach for description of shock phenomena in a BEC.

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