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SYSF: Superfluidity

SYSF 2: Superfluidity 2

SYSF 2.3: Invited Talk

Monday, March 27, 2006, 12:30–13:00, HSZ 04

Bose–Einstein Condensation in a Disorder Potential — •Robert Graham — Fachbereich Physik, Universität Duisburg-Essen

Modern experimentation with ultracold atoms in traps has revived the interest in the old but not completely solved problem of ‘dirty bosons’. The problem is experimentally relevant for miniaturization of BECs on chips and can also be studied by tayloring disorder potentials via laser speckle fields. Theoretically it is intriguing because of the competition of localization and interaction, of Anderson localization and the elusive Bose-glass phase, and of disorder and superfluidity. The talk reviews recent theoretical work on this problem in our group, placing it in the context of some of the earlier work in this area.