Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/152950
Title: Quenched topological boundary modes can persist in a trivial system
Authors: Lee, Ching Hua
Song, Justin Chien Wen
Keywords: Science::Physics
Issue Date: 2021
Source: Lee, C. H. & Song, J. C. W. (2021). Quenched topological boundary modes can persist in a trivial system. Communications Physics, 4(1), 145-. https://dx.doi.org/10.1038/s42005-021-00645-w
Project: NRF-NRFF 2016-05
NTU-SUG
MOE 2018- T3-1-002
Journal: Communications Physics
Abstract: Topological boundary modes can occur at the spatial interface between a topological and gapped trivial phase and exhibit a wavefunction that exponentially decays in the gap. Here we argue that this intuition fails for a temporal boundary between a prequench topological phase that possess topological boundary eigenstates and a postquench gapped trivial phase that does not possess any eigenstates in its gap. In particular, we find that characteristics of states (e.g., probability density) prepared in a topologically non-trivial system can persist long after it is quenched into a gapped trivial phase with spatial profiles that appear frozen over long times postquench. After this near-stationary window, topological boundary mode profiles decay albeit, slowly in a power-law fashion. This behavior highlights the unusual features of nonequilibrium protocols enabling quenches to extend and control localized states of both topological and non-topological origins.
URI: https://hdl.handle.net/10356/152950
ISSN: 2399-3650
DOI: 10.1038/s42005-021-00645-w
Rights: © 2021 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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