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Bulletin of the American Physical Society

The Role of Interactions in Disorder Induced Damping of Dipole Oscillations of a Bose-Einstein Condensate

S. E. Pollack, D. Dries, Theodore A. Corcovilos, Randall G. Hulet

Published Mar 17, 2009• 0 citations
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This thesis experimentally investigates Bloch oscillations of a Rubidium-87 Bose-Einstein condensate in an disordered optical lattice. The disorder is created by superposing an additional, incommensurate optical lattice to the main lattice. Individually, collisional mean-field interactions between atoms as well as disorder both lead to a damping of the oscillations. However, we observe a competition between the two contributions, which results in an effective reduction of the disorder-induced damping due to mean-field interactions. This observation is consistent with an interaction-induced screening of the potential.