Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2008-08-28
PUSHING THE FRONTIERS OF ATOMIC PHYSICS, Proceedings of the XXI International Conference on Atomic Physics, editors R Cote, P
Physics
Condensed Matter
Other Condensed Matter
To appear in "ATOMIC PHYSICS 21", proceedings of the XXI International Conference on Atomic Physics (ICAP 2008)
Scientific paper
We report on experiments exploring the physics of dipolar quantum gases using a Chromium Bose-Einstein condensate (BEC). By means of a Feshbach resonance, it is possible to reduce the effects of short range interactions and reach a regime where the physics is governed by the long-range, anisotropic dipole-dipole interaction between the large ($6 \mu_{\rm B}$) magnetic moments of Chromium atoms. Several dramatic effects of the dipolar interaction are observed: the usual inversion of ellipticity of the condensate during time-of flight is inhibited, the stability of the dipolar gas depends strongly on the trap geometry, and the explosion following the collapse of an unstable dipolar condensate displays d-wave like features.
Fröhlich Bernd
Griesmaier Axel
Koch Th.
Lahaye Thierry
Metz James
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