Propagation of Sound in Two-Species Bose-Einstein Condensates
D. Lima, P. Borckmans, G. Dewel
Abstract
We investigate the propagation of zero sound in two-species interpenetrating Bose-Einstein condensates. In very elongated clouds, this propagation is shown to be essentially one-dimensional. We also present 1D numerical experiments that exhibit the existence of two different sound pulses with velocities consistent with the theoretical predictions.
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