Supersonic flow of a Bose-Einstein condensate past an oscillating attractive-repulsive obstacle
arXiv:1212.5644 · doi:10.1103/PhysRevA.87.045601
Abstract
We investigate by numerical simulations the pattern formation after an oscillating attractive-repulsive obstacle inserted into the flow of a Bose-Einstein condensate. For slow oscillations we observe a complex emission of vortex dipoles. For moderate oscillations organized lined up vortex dipoles are emitted. For high frequencies no dipoles are observed but only lined up dark fragments. The results shows that the drag force turns negative for sufficiently high frequency. We also successfully model the {\it ship waves} in front of the obstacle. In the limit of very fast oscillations all the excitations of the system tend to vanish.
arXiv comment8 pages, 13 figures
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Cited by in corpus (6)
- Many-Body Dissipative Flow of a Confined Scalar Bose-Einstein Condensate Driven by a Gaussian Impurity
- Vortex nucleation through fragmentation in a stirred resonant Bose-Einstein condensate
- Vortex shedding frequency of a moving obstacle in a Bose-Einstein condensate
- Pattern formation in one-dimensional polaron systems and temporal orthogonality catastrophe
- Twisted Phonons in Bose-Einstein condensates
- Supersonic Flow Past an Obstacle in a Quasi-Two-Dimensional Lee-Huang-Yang Quantum Fluid