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Phys. Rev. Lett. 96, 123202 (2006) [4 pages]

Controlling Collisions of Ultracold Atoms with dc Electric Fields

R. V. Krems
Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
Received 14 August 2005; revised 12 March 2006; published 28 March 2006

It is demonstrated that elastic collisions of ultracold atoms forming a heteronuclear collision complex can be manipulated by laboratory practicable dc electric fields. The mechanism of electric field control is based on the interaction of the instantaneous dipole moment of the collision pair with external electric fields. It is shown that this interaction is dramatically enhanced in the presence of a p-wave shape or Feshbach scattering resonance near the collision threshold, which leads to novel electric-field-induced Feshbach resonances.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.96.123202
DOI: 10.1103/PhysRevLett.96.123202
PACS: 34.50.-s; 34.20.Gj
  • 34.50.-s
    Scattering of atoms and molecules
  • 34.20.Gj
    Intermolecular and atom–molecule potentials and forces
  • YEAR: 2006
KEYWORDS: electric field effects, atom-atom collisions, resonant states, molecular moments, electric moments

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