Effective Field Theory for Atom-Molecule Systems III: Dynamic Effects of a Feshbach Resonance on Bragg scattering from a Bose-Einstein Condensate
Atomic and Molecular Clusters
2011-09-15 v1 Other Condensed Matter
Quantum Gases
Abstract
We present a theoretical model for Bragg scattering from a Bose-Einstein condensate (BEC) in the vicinity of a magnetic Feshbach resonance, using a two c-field formalism, one c-field for the atom and the other for a molecule formed of two atoms. We use this model to numerically simulate a recent experiment [S. B. Papp et al., Phys. Rev. Lett., 101(13):135301, Sep 2008] investigating the effects of strong interactions on the Bragg spectrum from a 85Rb BEC. Results from these simulations are in very good quantitative agreement with the experimental results, confirming the importance of the resonance bound state in the dynamics of the condensate for fast experiments like Bragg scattering.
Keywords
Cite
@article{arxiv.1109.2977,
title = {Effective Field Theory for Atom-Molecule Systems III: Dynamic Effects of a Feshbach Resonance on Bragg scattering from a Bose-Einstein Condensate},
author = {Catarina E. Sahlberg and R. J. Ballagh and C. W. Gardiner},
journal= {arXiv preprint arXiv:1109.2977},
year = {2011}
}
Comments
27 pages, 8 figures