Topological inheritance in two-component Hubbard models with single-component Su-Schrieffer-Heeger dimerization

authored by: Suman Mondal, Sebastian Greschner, Luis Santos, Tapan Mishra
Abstract: The interplay between interparticle interactions and topological features may result in unusual phenomena. Interestingly, interactions may induce topological features in an originally trivial system, as we illustrate for the case of a one-dimensional two-component Hubbard model in which one component is subjected to Su-Schrieffer-Heeger dimerization, whereas the other one is not. We show that due to intercomponent interactions the topological properties of one component are induced in the originally trivial one. Although for large interactions topological inheritance may be readily explained by on-site pairing, we show that the threshold for full inheritance occurs at weak interactions, for which the components are not yet paired. We illustrate this inheritance by discussing both bulk and edge properties, as well as dynamical observables as mean chiral displacement and charge pumping.
Organisation(s): Institute of Theoretical Physics
QuantumFrontiers
External Organisation(s): Indian Institute of Technology Guwahati (IITG)
University of Geneva
Type: Article
Journal: Physical Review A
Volume: 104
ISSN: 2469-9926
Publication date: 22.07.2021
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Atomic and Molecular Physics, and Optics
Electronic version(s): https://arxiv.org/abs/2008.07224 (Access: Open)
https://doi.org/10.1103/PhysRevA.104.013315 (Access: Closed)

BibTeX

@article{2cd21d9665d748f1873d4302002d4296,
title = "Topological inheritance in two-component Hubbard models with single-component Su-Schrieffer-Heeger dimerization",
abstract = "The interplay between interparticle interactions and topological features may result in unusual phenomena. Interestingly, interactions may induce topological features in an originally trivial system, as we illustrate for the case of a one-dimensional two-component Hubbard model in which one component is subjected to Su-Schrieffer-Heeger dimerization, whereas the other one is not. We show that due to intercomponent interactions the topological properties of one component are induced in the originally trivial one. Although for large interactions topological inheritance may be readily explained by on-site pairing, we show that the threshold for full inheritance occurs at weak interactions, for which the components are not yet paired. We illustrate this inheritance by discussing both bulk and edge properties, as well as dynamical observables as mean chiral displacement and charge pumping.",
author = "Suman Mondal and Sebastian Greschner and Luis Santos and Tapan Mishra",
note = "Funding Information: Department of Science and Technology, Ministry of Science and Technology Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung Deutsche Forschungsgemeinschaft The computational simulations were carried out using the Param-Ishan HPC facility at Indian Institute of Technology - Guwahati, India. S.G. acknowledges support by the Swiss National Science Foundation under Division II. T.M. acknowledges DST-SERB, India for the early career grant through Project No. ECR/2017/001069. L.S. acknowledges support of the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy – EXC-2123 QuantumFrontiers – 390837967.",
year = "2021",
month = jul,
day = "22",
doi = "10.1103/PhysRevA.104.013315",
language = "English",
volume = "104",
journal = "Physical Review A",
issn = "2469-9926",
publisher = "American Physical Society",
number = "1",
}