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APS » Journals » Phys. Rev. A » Volume 67 » Issue 4
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Phys. Rev. A 67, 043605 (2003) [8 pages]

Effective-mass analysis of Bose-Einstein condensates in optical lattices: Stabilization and levitation

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H. Pu1, L. O. Baksmaty2, W. Zhang1, N. P. Bigelow2, and P. Meystre1
1Optical Sciences Center, The University of Arizona, Tucson, Arizona 85721
2Department of Physics and Astronomy, and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627

Received 2 December 2002; published 11 April 2003

We investigate the time evolution of a Bose-Einstein condensate in a periodic optical potential. Using an effective mass formalism, we study the equation of motion for the envelope function modulating the Bloch states of the lattice potential. In particular, we show how the negative effective-mass affects the dynamics of the condensate.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.67.043605
DOI:
10.1103/PhysRevA.67.043605
PACS:
03.75.Kk, 05.30.Jp, 42.50.Vk
 
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