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Properties of quasi-two-dimensional condensates in highly anisotropic traps

Physical Review A Atomic Molecular and Optical Physics 71:1 (2005)

Authors:

G Hechenblaikner, JM Krueger, CJ Foot

Abstract:

We theoretically investigate some of the observable properties of quasi-two-dimensional condensates. Using a variational model based on a Gaussian-parabolic trial wave function we calculate chemical potential, condensate size in time-of-flight, release energy, and collective excitation spectrum for varying trap geometries and atom numbers and find good agreement with recent published experimental results. © 2005 The American Physical Society.
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Testing and design of a lens system for atom trapping and fluorescence detection

(2004)

Authors:

P Baranowski, J Zacks, G Hechenblaikner, CJ Foot
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Properties of quasi two-dimensional condensates in highly anisotropic traps

(2004)

Authors:

G Hechenblaikner, JM Krueger, CJ Foot
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Quasi-2D Confinement of a BEC in a Combined Optical and Magnetic Potential

(2004)

Authors:

NL Smith, WH Heathcote, G Hechenblaikner, E Nugent, CJ Foot
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Experimental observation of the tilting mode of an array of vortices in a dilute Bose-Einstein condensate.

Phys Rev Lett 93:8 (2004) 080406

Authors:

NL Smith, WH Heathcote, JM Krueger, CJ Foot

Abstract:

We have measured the precession frequency of a vortex lattice in a Bose-Einstein condensate of Rb87 atoms. The observed mode corresponds to a collective motion in which all the vortices in the array are tilted by a small angle with respect to the z axis (the symmetry axis of the trapping potential) and synchronously rotate about this axis. This motion corresponds to excitation of a Kelvin wave along the core of each vortex and we have verified that it has the handedness expected for such helical waves, i.e., precession in the opposite sense to the rotational flow around the vortices.
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