Rotons in Gaseous Bose-Einstein Condensates Irradiated by a Laser

D. H. J. O’Dell, S. Giovanazzi, and G. Kurizki
Phys. Rev. Lett. 90, 110402 – Published 17 March 2003

Abstract

A gaseous Bose-Einstein condensate irradiated by a far off-resonance laser has long-range interatomic correlations caused by laser-induced dipole-dipole interactions. These correlations, which are tunable via the laser intensity and frequency, can produce a “roton” minimum in the excitation spectrum—behavior reminiscent of the strongly correlated superfluid liquid He II.

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  • Received 16 November 2002

DOI:https://doi.org/10.1103/PhysRevLett.90.110402

©2003 American Physical Society

Authors & Affiliations

D. H. J. O’Dell1, S. Giovanazzi2, and G. Kurizki3

  • 1Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, United Kingdom
  • 2Center for Theoretical Physics and College of Science, Polish Academy of Sciences, Aleja Lotników, 32/46, 02-668 Warsaw, Poland
  • 3Chemical Physics Department, Weizmann Institute of Science, 76100 Rehovot, Israel

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Issue

Vol. 90, Iss. 11 — 21 March 2003

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