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Density matrix embedding theory for interacting electron-phonon systems

Sandhoefer, Barbara and Chan, Garnet Kin-Lic (2016) Density matrix embedding theory for interacting electron-phonon systems. Physical Review B, 94 (8). Art. No. 085115. ISSN 2469-9950. doi:10.1103/PhysRevB.94.085115.

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We describe the extension of the density matrix embedding theory framework to coupled interacting fermion-boson systems. This provides a frequency-independent, entanglement embedding formalism to treat bulk fermion-boson problems. We illustrate the concepts within the context of the one-dimensional Hubbard-Holstein model, where the phonon bath states are obtained from the Schmidt decomposition of a self-consistently adjusted coherent state. We benchmark our results against accurate density matrix renormalization group calculations.

Item Type:Article
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URLURL TypeDescription Paper
Chan, Garnet Kin-Lic0000-0001-8009-6038
Additional Information:© 2016 American Physical Society. Received 12 February 2016. Revised 24 June 2016. We are grateful to Eric Jeckelmann and Holger Fehske for supplying the DMRG reference energies. We acknowledge helpful discussions with Boxiao Zheng. This work was primarily supported by the US Department of Energy via DE-SC0010530. Additional support was provided by the US Department of Energy, SciDAC DE-SC0008624, as well as through the Simons Foundation, through the Simons Collaboration on the Many-Electron Problem.
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0010530
Department of Energy (DOE)DE-SC0008624
Simons FoundationUNSPECIFIED
Issue or Number:8
Record Number:CaltechAUTHORS:20161221-105645933
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:73070
Deposited By: Donna Wrublewski
Deposited On:21 Dec 2016 19:08
Last Modified:11 Nov 2021 05:11

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