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Dynamics of spin and density fluctuations in strongly interacting few-body systems
The decoupling of spin and density dynamics is a remarkable feature of quantum one-dimensional many-body systems. In a few-body regime, however, little is known about this phenomenon. To address this problem, we study the time evolution of a small system of strongly interacting fermions after a sudd...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6831690/ https://www.ncbi.nlm.nih.gov/pubmed/31690841 http://dx.doi.org/10.1038/s41598-019-52392-2 |
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author | Barfknecht, Rafael Emilio Foerster, Angela Zinner, Nikolaj Thomas |
author_facet | Barfknecht, Rafael Emilio Foerster, Angela Zinner, Nikolaj Thomas |
author_sort | Barfknecht, Rafael Emilio |
collection | PubMed |
description | The decoupling of spin and density dynamics is a remarkable feature of quantum one-dimensional many-body systems. In a few-body regime, however, little is known about this phenomenon. To address this problem, we study the time evolution of a small system of strongly interacting fermions after a sudden change in the trapping geometry. We show that, even at the few-body level, the excitation spectrum of this system presents separate signatures of spin and density dynamics. Moreover, we describe the effect of considering additional internal states with SU(N) symmetry, which ultimately leads to the vanishing of spin excitations in a completely balanced system. |
format | Online Article Text |
id | pubmed-6831690 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-68316902019-11-13 Dynamics of spin and density fluctuations in strongly interacting few-body systems Barfknecht, Rafael Emilio Foerster, Angela Zinner, Nikolaj Thomas Sci Rep Article The decoupling of spin and density dynamics is a remarkable feature of quantum one-dimensional many-body systems. In a few-body regime, however, little is known about this phenomenon. To address this problem, we study the time evolution of a small system of strongly interacting fermions after a sudden change in the trapping geometry. We show that, even at the few-body level, the excitation spectrum of this system presents separate signatures of spin and density dynamics. Moreover, we describe the effect of considering additional internal states with SU(N) symmetry, which ultimately leads to the vanishing of spin excitations in a completely balanced system. Nature Publishing Group UK 2019-11-05 /pmc/articles/PMC6831690/ /pubmed/31690841 http://dx.doi.org/10.1038/s41598-019-52392-2 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 Barfknecht, Rafael Emilio Foerster, Angela Zinner, Nikolaj Thomas Dynamics of spin and density fluctuations in strongly interacting few-body systems |
title | Dynamics of spin and density fluctuations in strongly interacting few-body systems |
title_full | Dynamics of spin and density fluctuations in strongly interacting few-body systems |
title_fullStr | Dynamics of spin and density fluctuations in strongly interacting few-body systems |
title_full_unstemmed | Dynamics of spin and density fluctuations in strongly interacting few-body systems |
title_short | Dynamics of spin and density fluctuations in strongly interacting few-body systems |
title_sort | dynamics of spin and density fluctuations in strongly interacting few-body systems |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6831690/ https://www.ncbi.nlm.nih.gov/pubmed/31690841 http://dx.doi.org/10.1038/s41598-019-52392-2 |
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