Vortex structures formed by the interference of sliced condensates

R. Carretero-González, N. Whitaker, P. G. Kevrekidis, and D. J. Frantzeskakis
Phys. Rev. A 77, 023605 – Published 4 February 2008

Abstract

We study the formation of vortices, vortex necklaces, and vortex ring structures as a result of the interference of higher-dimensional Bose-Einstein condensates (BECs). This study is motivated by earlier theoretical results pertaining to the formation of dark solitons by interfering quasi-one-dimensional BECs, as well as recent experiments demonstrating the formation of vortices by interfering higher-dimensional BECs. Here, we demonstrate the genericness of the relevant scenario, but also highlight a number of additional possibilities emerging in higher-dimensional settings. A relevant example is, e.g., the formation of a “cage” of vortex rings surrounding the three-dimensional bulk of the condensed atoms. The effects of the relative phases of the different BEC fragments and the role of damping due to coupling with the thermal cloud are also discussed. Our predictions should be immediately tractable in currently existing experimental BEC setups.

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  • Received 10 October 2007

DOI:https://doi.org/10.1103/PhysRevA.77.023605

©2008 American Physical Society

Authors & Affiliations

R. Carretero-González1, N. Whitaker2, P. G. Kevrekidis2, and D. J. Frantzeskakis3

  • 1Nonlinear Dynamical Systems Group,* Department of Mathematics and Statistics, and Computational Science Research Center, San Diego State University, San Diego, California 92182-7720, USA
  • 2Department of Mathematics and Statistics, University of Massachusetts, Amherst, Massachusetts 01003-4515, USA
  • 3Department of Physics, University of Athens, Panepistimiopolis, Zografos, Athens 15784, Greece

  • *URL: http://nlds.sdsu.edu

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Vol. 77, Iss. 2 — February 2008

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