Document Type
Article
Publication Date
11-2008
Publication Title
Physical Review A
DOI
10.1103/PhysRevA.78.053613
ISSN
2469-9926
Abstract
We simulate the growth of a dual species Bose-Einstein condensate using a Gross-Pitaevskii equation with an additional gain term giving rise to the growth. Such growth occurs during simultaneous evaporative cooling of a mixture of two gases. The ground state of a dual condensate is normally either a miscible mixture, or an immiscible phase with two spatially separated components. In a cigar trap the ground state typically consists of one component in the center, and the other component flanking it. Our simulations show that when the condensates are formed in a cigar trap and the mixture is phase separated, then the final state upon the end of the growth is generally far from the true ground state of the system. Instead it consists of multiple, interleaved bubbles of the two species. Such a pattern was observed recently in an experiment by Wieman's group at JILA, and our simulations are in good qualitative agreement with the experiment. We explain the pattern formation as due to the onset of modulation instability during growth, and study the dependence of the final state pattern on various parameters of the system.
Recommended Citation
Ronen, Shai, John L. Bohn, Laura Elisa Halmo, Mark Edwards.
2008.
"Dynamical Pattern Formation During Growth of a Dual-Species Bose-Einstein Condensate."
Physical Review A, 78 (78): 053613: American Physical Society.
doi: 10.1103/PhysRevA.78.053613 source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.78.053613
https://digitalcommons.georgiasouthern.edu/physics-facpubs/16
Comments
Authors have the right to use all or part of the Article, including the APS-prepared version without revision or modification, on the author(s)’ web home page or employer’s website. (source:http://journals.aps.org/authors/transfer-of-copyright-agreement) Article obtained from Physical Review A.