Imprinting a topological interface using Zeeman shifts in an atomic spinor Bose–Einstein condensate
Imprinting a topological interface using Zeeman shifts in an atomic spinor Bose–Einstein condensate
We propose to use spatial control of the Zeeman energy shifts in an ultracold atomic gas to engineer an interface between topologically distinct regions. This provides an experimentally accessible means for studying the interface physics of topological defects and textures. Using the spin-1 Bose–Einstein condensate as an example, we find spinor wave functions that represent defects and textures continuously connecting across the interface between polar and ferromagnetic regions induced by spatially varying Zeeman shifts. By numerical energy-minimization we characterize the defect core structures and determine the energetic stability. The techniques proposed could potentially be used in the laboratory to emulate complex interface physics arising, e.g., in cosmological and condensed-matter contexts in both uniform and lattice systems.
bose-einstein condensates, spinor condensates, topological defects, defects and textures, topological interface, zeeman effects
1-28
Borgh, Magnus O.
a3c181f8-0535-46cd-bb9a-6e930a81f86e
Lovegrove, Justin
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Ruostekoski, Janne
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
23 May 2014
Borgh, Magnus O.
a3c181f8-0535-46cd-bb9a-6e930a81f86e
Lovegrove, Justin
ee869a91-6a89-4000-9d71-93ca8626c6ea
Ruostekoski, Janne
2beb155e-64b0-4ee9-9cfe-079947a9c9f4
Borgh, Magnus O., Lovegrove, Justin and Ruostekoski, Janne
(2014)
Imprinting a topological interface using Zeeman shifts in an atomic spinor Bose–Einstein condensate.
New Journal of Physics, 16 (53046), .
(doi:10.1088/1367-2630/16/5/053046).
Abstract
We propose to use spatial control of the Zeeman energy shifts in an ultracold atomic gas to engineer an interface between topologically distinct regions. This provides an experimentally accessible means for studying the interface physics of topological defects and textures. Using the spin-1 Bose–Einstein condensate as an example, we find spinor wave functions that represent defects and textures continuously connecting across the interface between polar and ferromagnetic regions induced by spatially varying Zeeman shifts. By numerical energy-minimization we characterize the defect core structures and determine the energetic stability. The techniques proposed could potentially be used in the laboratory to emulate complex interface physics arising, e.g., in cosmological and condensed-matter contexts in both uniform and lattice systems.
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NJP_16_5_053046.pdf
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e-pub ahead of print date: 27 January 2014
Published date: 23 May 2014
Keywords:
bose-einstein condensates, spinor condensates, topological defects, defects and textures, topological interface, zeeman effects
Organisations:
Applied Mathematics
Identifiers
Local EPrints ID: 365177
URI: http://eprints.soton.ac.uk/id/eprint/365177
PURE UUID: 4ca8a144-12ee-410f-9381-cac0e3c8b43f
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Date deposited: 29 May 2014 08:13
Last modified: 14 Mar 2024 16:48
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Author:
Justin Lovegrove
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