Spatial density oscillations in trapped dipolar condensates

H.-Y. Lu, H. Lu, J.-N. Zhang, R.-Z. Qiu, H. Pu, and S. Yi
Phys. Rev. A 82, 023622 – Published 30 August 2010

Abstract

We investigated the ground-state wave function and the free expansion of a trapped dipolar condensate. We find that dipolar interaction may induce both biconcave and dumbbell density profiles in the pancake- and cigar-shaped traps, respectively. In the parameter plane of the interaction strengths, the oscillating density profile in a harmonically trapped dipolar condensate occurs only when the interaction parameters fall into certain isolated areas. The relation between the positions of these areas and the trap geometry is explored. When a box potential is used to confine the condensate, spatial density oscillation becomes a generic feature. By studying the free expansion of the condensate with an oscillating density profile, we show that the spatial density oscillation is detectable from the time-of-flight image.

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  • Received 5 May 2010

DOI:https://doi.org/10.1103/PhysRevA.82.023622

©2010 American Physical Society

Authors & Affiliations

H.-Y. Lu1, H. Lu2, J.-N. Zhang1, R.-Z. Qiu1, H. Pu2, and S. Yi1

  • 1Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 2Department of Physics and Astronomy, and Rice Quantum Institute, Rice University, Houston, Texas 77251, USA

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Vol. 82, Iss. 2 — August 2010

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