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  Phonon-enhanced relaxation and excitation in the Holstein-Hubbard model

Werner, P., & Eckstein, M. (2013). Phonon-enhanced relaxation and excitation in the Holstein-Hubbard model. Physical Review B, 88(16): 165108. doi:10.1103/PhysRevB.88.165108.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0028-1668-2 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0028-2EC6-F
Genre: Journal Article

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PhysRevB.88.165108.pdf (Publisher version), 2MB
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http://dx.doi.org/10.1103/PhysRevB.88.165108 (Publisher version)
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http://arxiv.org/abs/1307.8096 (Preprint)
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 Creators:
Werner, Philipp1, Author
Eckstein, Martin2, 3, Author           
Affiliations:
1Department of Physics, University of Fribourg, 1700 Fribourg, Switzerland, ou_persistent22              
2Theory of Correlated Systems out of Equilibrium, Research Groups, Max Planck Research Department for Structural Dynamics, Department of Physics, University of Hamburg, External Organizations, ou_2173641              
3CFEL, Hamburg, Germany, ou_persistent22              

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Free keywords: PACS number: 71.10.Fd
 Abstract: We study quenches of the interaction and electron-phonon coupling parameter in the Hubbard-Holstein model, using nonequilibrium dynamical mean field theory. The calculations are based on a generalized Lang-Firsov scheme for time-dependent interactions or externally driven phonons, and an approximate strong-coupling impurity solver. The interaction quench calculations reveal the phonon-assisted decay of excess doublons, while the quenches of the electron-phonon coupling lead to persistent oscillations of the phonons and to a phonon-enhanced doublon production.

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Language(s): eng - English
 Dates: 2013-07-312013-10-072013-10-15
 Publication Status: Issued
 Pages: 13
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevB.88.165108
arXiv: 1307.8096
 Degree: -

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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 88 (16) Sequence Number: 165108 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008