Faraday patterns in bose-Einstein condensates |
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Authors: | Staliunas Kestutis Longhi Stefano De Valcárcel Germán J |
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Institution: | Physikalisch Technische Bundesanstalt, Bundesallee 100, D-38116 Braunschweig, Germany. |
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Abstract: | Temporal periodic modulation of the interatomic s-wave scattering length in Bose-Einstein condensates is shown to excite subharmonic patterns in the atom density through a parametric resonance. The dominant wavelength of the spatial structures is primarily selected by the excitation frequency but also affected by the depth of the spatial modulation via a nonlinear resonance. These phenomena represent analogues of the Faraday patterns excited in vertically vibrated liquids. |
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