Twofold correlation spreading in a strongly correlated lattice Bose gas

We study the spreading of correlations in the Bose-Hubbard chain, using the time-dependent matrix-product state approach. In both the superfluid and the Mott-insulator phases, we find that the time-dependent correlation functions generally display a universal twofold cone structure characterized by...

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Detalles Bibliográficos
Autores principales: Despres, Julien, Villa, Louis, Sanchez-Palencia, Laurent
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6411744/
https://www.ncbi.nlm.nih.gov/pubmed/30858426
http://dx.doi.org/10.1038/s41598-019-40679-3
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author Despres, Julien
Villa, Louis
Sanchez-Palencia, Laurent
author_facet Despres, Julien
Villa, Louis
Sanchez-Palencia, Laurent
author_sort Despres, Julien
collection PubMed
description We study the spreading of correlations in the Bose-Hubbard chain, using the time-dependent matrix-product state approach. In both the superfluid and the Mott-insulator phases, we find that the time-dependent correlation functions generally display a universal twofold cone structure characterized by two distinct velocities. The latter are related to different microscopic properties of the system and provide useful information on the excitation spectrum. The twofold spreading of correlations has profound implications on experimental observations that are discussed.
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spelling pubmed-64117442019-03-13 Twofold correlation spreading in a strongly correlated lattice Bose gas Despres, Julien Villa, Louis Sanchez-Palencia, Laurent Sci Rep Article We study the spreading of correlations in the Bose-Hubbard chain, using the time-dependent matrix-product state approach. In both the superfluid and the Mott-insulator phases, we find that the time-dependent correlation functions generally display a universal twofold cone structure characterized by two distinct velocities. The latter are related to different microscopic properties of the system and provide useful information on the excitation spectrum. The twofold spreading of correlations has profound implications on experimental observations that are discussed. Nature Publishing Group UK 2019-03-11 /pmc/articles/PMC6411744/ /pubmed/30858426 http://dx.doi.org/10.1038/s41598-019-40679-3 Text en © The Author(s) 2019 Open Access 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/.
spellingShingle Article
Despres, Julien
Villa, Louis
Sanchez-Palencia, Laurent
Twofold correlation spreading in a strongly correlated lattice Bose gas
title Twofold correlation spreading in a strongly correlated lattice Bose gas
title_full Twofold correlation spreading in a strongly correlated lattice Bose gas
title_fullStr Twofold correlation spreading in a strongly correlated lattice Bose gas
title_full_unstemmed Twofold correlation spreading in a strongly correlated lattice Bose gas
title_short Twofold correlation spreading in a strongly correlated lattice Bose gas
title_sort twofold correlation spreading in a strongly correlated lattice bose gas
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6411744/
https://www.ncbi.nlm.nih.gov/pubmed/30858426
http://dx.doi.org/10.1038/s41598-019-40679-3
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