Imprinting a topological interface using Zeeman shifts in an atomic spinor Bose–Einstein condensate

Borgh, Magnus O. and 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. ISSN 1367-2630

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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.

Item Type: Journal Article
Journal or Publication Title: New Journal of Physics
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 123699
Deposited By: ep_importer_pure
Deposited On: 26 Feb 2018 09:44
Refereed?: Yes
Published?: Published
Last Modified: 11 Feb 2020 09:20
URI: https://eprints.lancs.ac.uk/id/eprint/123699

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