Self-interfering matter-wave patterns generated by a moving laser obstacle in a two-dimensional Bose-Einstein condensate inside a power trap cut off by box potential boundaries
arXiv:1107.0369 · doi:10.1103/PhysRevA.84.033634
Abstract
We report the observation of highly energetic self-interfering matter-wave (SIMW) patterns generated by a moving obstacle in a two-dimensional Bose-Einstein condensate (BEC) inside a power trap cut off by hard-wall box potential boundaries. The obstacle initially excites circular dispersive waves radiating away from the center of the trap which are reflected from hard-wall box boundaries at the edges of the trap. The resulting interference between outgoing waves from the center of the trap and reflected waves from the box boundaries institutes, to the best of our knowledge, unprecedented standing wave patterns. For this purpose we simulated the time dependent Gross- Pitaevskii equation using the split-step Crank-Nicolson method. The obstacle is modelled by a moving impenetrable Gaussian potential barrier. Various trapping geometries are considered.
13 pages, 18 figures. We appreciate any comments from the physics community
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Cited by in corpus (5)
- C programs for solving the time-dependent Gross-Pitaevskii equation in a fully anisotropic trap
- Fortran and C programs for the time-dependent dipolar Gross-Pitaevskii equation in an anisotropic trap
- Conditions for order and chaos in the dynamics of a trapped Bose-Einstein condensate in coordinate and energy space
- Long-time averaged dynamics of a Bose-Einstein condensate in a bichromatic optical lattice with external harmonic confinement
- A Lawson-time-splitting extended Fourier pseudospectral method for the Gross-Pitaevskii equation with time-dependent low regularity potential