Observation of dipole-dipole interaction in a degenerate quantum gas

Abstract

We have investigated the expansion of a Bose-Einstein condensate (BEC) of strongly magnetic chromium atoms. The long-range and anisotropic magnetic dipole-dipole interaction leads to an anisotropic deformation of the expanding Cr-BEC which depends on the orientation of the atomic dipole moments. Our measurements are consistent with the theory of dipolar quantum gases and show that a Cr-BEC is an excellent model system to study dipolar interactions in such gases.

4 pages, 2 figures

References in corpus (3)

• Bose-Einstein condensation of chromium
• Quo vadis, cold molecules? - Editorial review
• Exact hydrodynamics of a trapped dipolar Bose-Einstein condensate

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