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  Nonequilibrium variational-cluster approach to real-time dynamics in the Fermi-Hubbard model

Hofmann, F., Eckstein, M., & Potthoff, M. (2016). Nonequilibrium variational-cluster approach to real-time dynamics in the Fermi-Hubbard model. Journal of Physics: Conference Series, 696: 012002. doi:10.1088/1742-6596/696/1/012002.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-0D19-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-5559-4
Genre: Conference Paper

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http://arxiv.org/abs/1510.05866 (Preprint)
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 Creators:
Hofmann, Felix1, Author
Eckstein, Martin2, 3, Author              
Potthoff, Michael1, Author
Affiliations:
1I. Institut für Theoretische Physik, Universität Hamburg, Jungiusstraße 9, 20355 Hamburg, Germany, 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, Notkestraße 85, 22607 Hamburg, Germany, ou_persistent22              

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Free keywords: Condensed Matter; Strongly Correlated Electrons; Quantum Gases
 Abstract: The nonequilibrium variational-cluster approach is applied to study the real-time dynamics of the double occupancy in the one-dimensional Fermi-Hubbard model after different fast changes of hopping parameters. A simple reference system, consisting of isolated Hubbard dimers, is used to discuss different aspects of the numerical implementation of the approach in the general framework of nonequilibrium self-energy functional theory. Opposed to a direct solution of the Euler equation, its time derivative is found to serve as numerically tractable and stable conditional equation to fix the time-dependent variational parameters.

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Language(s): eng - English
 Dates: 2015-10-202016-02-252016-04-12
 Publication Status: Published online
 Pages: 16
 Publishing info: -
 Table of Contents: -
 Rev. Method: Internal
 Identifiers: arXiv: 1510.05866
DOI: 10.1088/1742-6596/696/1/012002
 Degree: -

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Title: Progress in Non-equilibrium Green’s Functions (PNGF VI)
Place of Event: Lund University, Sweden
Start-/End Date: 2015-08-17 - 2015-08-21

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Title: Journal of Physics: Conference Series
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing, 1
Pages: - Volume / Issue: 696 Sequence Number: 012002 Start / End Page: - Identifier: ISSN: 1742-6588
CoNE: https://pure.mpg.de/cone/journals/resource/111097776606042