Valentí-Rojas, G., Westerberg, N. and Öhberg, P. (2020) Synthetic flux attachment. Physical Review Research, 2, 033453. (doi: 10.1103/PhysRevResearch.2.033453)
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Abstract
Topological field theories emerge at low energy in strongly correlated condensed matter systems and appear in the context of planar gravity. In particular, the study of Chern-Simons terms gives rise to the concept of flux attachment when the gauge field is coupled to matter, yielding flux-charge composites. We investigate the generation of flux attachment in a Bose-Einstein condensate in the presence of nonlinear synthetic gauge potentials. In doing so, we identify the U (1) Chern-Simons gauge field as a singular density-dependent gauge potential, which in turn can be expressed as a Berry connection. We envisage a proof-of-concept scheme where the artificial gauge field is perturbatively induced by an effective light-matter detuning created by interparticle interactions. At a mean field level, we recover the action of a “charged” superfluid minimally coupled to both a background and a Chern-Simons gauge field. Remarkably, a localized density perturbation in combination with a nonlinear gauge potential gives rise to an effective composite boson model of fractional quantum Hall effect, displaying anyonic vortices.
| Item Type: | Articles |
|---|---|
| Additional Information: | G.V.-R. acknowledges financial support from EPSRC CMCDT Grant No. EP/L015110/1. N.W. acknowledges funding from the UK Engineering and Physical Sciences Research Council under Grant No. EP/R513222/1, as well as CM-CDT Grant No. EP/L015110/1. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Westerberg, Dr Niclas |
| Authors: | Valentí-Rojas, G., Westerberg, N., and Öhberg, P. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Physical Review Research |
| Publisher: | American Physical Society |
| ISSN: | 2643-1564 |
| ISSN (Online): | 2643-1564 |
| Published Online: | 21 September 2020 |
| Copyright Holders: | Copyright © 2020 The Authors |
| First Published: | First published in Physical Review Research 2: 033453 |
| Publisher Policy: | Reproduced under a Creative Commons licence |
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