Butera, S. , Valiente, M. and Öhberg, P. (2016) Vortex dynamics in superfluids governed by an interacting gauge theory. New Journal of Physics, 18(August), 085001. (doi: 10.1088/1367-2630/18/8/085001)
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Abstract
We study the dynamics of a vortex in a quasi two-dimensional Bose gas consisting of light-matter coupled atoms forming two-component pseudo spins. The gas is subject to a density dependent gauge potential, hence governed by an interacting gauge theory, which stems from a collisionally induced detuning between the incident laser frequency and the atomic energy levels. This provides a back-action between the synthetic gauge potential and the matter field. A Lagrangian approach is used to derive an expression for the force acting on a vortex in such a gas. We discuss the similarities between this force and the one predicted by Iordanskii, Lifshitz and Pitaevskii when scattering between a superfluid vortex and the thermal component is taken into account.
Item Type: | Articles |
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Additional Information: | SB acknowledges support from the EPSRC CM-CDT Grant No. EP/G03673X/1, MV and PÖ acknowledge support from EPSRC EP/J001392/1 and EP/M024636/1. |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Butera, Dr Salvatore |
Authors: | Butera, S., Valiente, M., and Öhberg, P. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | New Journal of Physics |
Publisher: | IOP Publishing |
ISSN: | 1367-2630 |
ISSN (Online): | 1367-2630 |
Published Online: | 02 August 2016 |
Copyright Holders: | Copyright © 2016 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft |
First Published: | First published in New Journal of Physics 18(August): 085001 |
Publisher Policy: | Reproduced under a Creative Commons License |
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