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Reference: Veness, T and Essler, FHL, (2016). Mobile impurity approach to the optical conductivity in the Hubbard chain. Physical Review B, 93 (20), Article: 205101.Citable link to this page:

 

Mobile impurity approach to the optical conductivity in the Hubbard chain

Abstract: We consider the optical conductivity in the one dimensional Hubbard model in the metallic phaseclose to half filling. In this regime most of the spectral weight is located at frequencies above anenergy scale Eopt that tends towards the optical gap in the Mott insulating phase for vanishingdoping. Using the Bethe Ansatz we relate Eopt to thresholds of particular kinds of excitations inthe Hubbard model. We then employ a mobile impurity models to analyze the optical conductivityfor frequencies slightly above these thresholds. This entails generalizing mobile impurity models toexcited states that are not highest weight with regards to the SU(2) symmetries of the Hubbardchain, and that occur at a maximum of the impurity dispersion.

Peer Review status:Peer reviewedPublication status:PublishedVersion:Accepted Manuscript Funder: Engineering and Physical Sciences Research Council   Notes:Copyright © 2016 American Physical Society. This is the accepted manuscript version of the article. The final version is available online from American Physical Society at: http://dx.doi.org/10.1103/PhysRevB.93.205101

Bibliographic Details

Publisher: American Physical Society

Publisher Website: http://www.aps.org/

Journal: Physical Review Bsee more from them

Publication Website: http://prb.aps.org/

Issue Date: 2016

pages:Article: 205101Identifiers

Urn: uuid:82d6ba3d-2c23-4d9e-a3df-3bf53665d626

Source identifier: 616923

Eissn: 2469-9969

Doi: https://doi.org/10.1103/PhysRevB.93.205101

Issn: 2469-9950 Item Description

Type: Journal article;

Version: Accepted Manuscript Tiny URL: pubs:616923

Relationships





Autor: Veness, T - institutionUniversity of Oxford Oxford, MPLS, Physics, Theoretical Physics - - - Essler, FHL - institutionUniversity

Fuente: https://ora.ox.ac.uk/objects/uuid:82d6ba3d-2c23-4d9e-a3df-3bf53665d626



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