Skip to main content
Presentation
Appearance of Modulated Spatial Pattern in a Dual-species BEC during Condensate Growth
Annual Meeting of the APS Division of Atomic,Molecular,and Optical Physics (2008)
  • Laura Halmo, Georgia Southern University
  • Shai Ronen, University of Colorado
  • John Bohn, University of Colorado
  • Mark Edwards, Georgia Southern University
Abstract

It has been long known that a dual-species BEC with a sufficiently large repulsive intra-species interaction becomes immiscible. In a recent experiment with Rb85 and Rb87 by the Wieman group at JILA, a complicated pattern of multiple interleaved ``bubbles'' of the the two species has been observed upon the end of evaporative cooling. This observation defies expectations that the ground state should only have a single boundary between the two species. We purpose a model wherein this spatial pattern is formed during condensate growth through a modulation instability mechanism. We model the growth of the condensates with a linear gain term added to the Gross Pitaevskii equation, and obtain qualitatively similar patterns to the experiment. We also predict the conditions which would maximize the number of bubbles.

Keywords
  • Gross Pitaevskii equation,
  • GPE
Disciplines
Publication Date
May, 2008
Citation Information
Mark Edwards. "Appearance of Modulated Spatial Pattern in a Dual-species BEC during Condensate Growth" Annual Meeting of the APS Division of Atomic,Molecular,and Optical Physics. State College,Pennsylvania. May. 2008.
source:http://meetings.aps.org/Meeting/DAMOP08/Session/L2.110