Effect of quantum fluctuations on bose-einstein condensation of bilayer atomic gases in rapid rotation

Y. Terakawa, N. Yokoshi, K. Kamide, D. Yamamoto, S. Kurihara

Research output: Contribution to journalArticle


We investigate vortex states and quantum fluctuations of bilayer atomic gases in rapid rotation. Among mean-field solutions of the Gross-Pitaevskii equation, we consider two types of vortex configurations: the vortex core positions of the layers are coincident or staggered. It is found that the coincident type is energetically preferred in the practical parameter regime. We also calculate the dispersion relations of collective modes and the filling factor for bosons outside the condensates. In the double layer system, quantum depletion is found to be suppressed due to interlayer tunneling. This means that Bose-Einstein condensation is stabilized compared to the single layer case.

Original languageEnglish
Pages (from-to)641-647
Number of pages7
JournalLaser Physics
Issue number5
Publication statusPublished - 2008 May


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

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