Stabilizing an attractive Bose-Einstein condensate by driving a surface collective mode

Arjendu K. Pattanayak, Arnaldo Gammal, Charles A. Sackett, and Randall G. Hulet
Phys. Rev. A 63, 033604 – Published 6 February 2001
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Abstract

Bose-Einstein condensates with attractive interatomic interactions undergo collective collapse beyond a critical number. We show theoretically that if the low-lying collective modes of the condensate are excited, the radial breathing mode further destabilizes the condensate. Remarkably, excitation of the quadrupolar surface mode causes the condensate to become more stable, imparting quasiangular momentum to it. A significantly larger number of atoms may then occupy the condensate. Efforts are under way for the experimental realization of these effects.

  • Received 8 June 2000

DOI:https://doi.org/10.1103/PhysRevA.63.033604

©2001 American Physical Society

Authors & Affiliations

Arjendu K. Pattanayak, Arnaldo Gammal*, Charles A. Sackett, and Randall G. Hulet

  • Department of Physics and Rice Quantum Institute, Rice University, Houston, Texas 77251-1892

  • *Present address: Instituto de Física Teórica, Universidade Estadual Paulista, 01405-900 São Paulo, Brazil.
  • Present address: Time and Frequency Division, National Institute of Standards and Technology, Boulder, CO 80303.

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Vol. 63, Iss. 3 — March 2001

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