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Journal articles
Chebyshev matrix product state impurity solver for dynamical mean-field theory
Abstract : We compute the spectral functions for the two-site dynamical cluster theory and for the two-orbital dynamical mean-field theory in the density-matrix renormalization group (DMRG) framework using Chebyshev expansions represented with matrix product states (MPS). We obtain quantitatively precise results at modest computational effort through technical improvements regarding the trun-cation scheme and the Chebyshev rescaling procedure. We furthermore establish the relation of the Chebyshev iteration to real-time evolution, and discuss technical aspects as computation time and implementation in detail.
Cited literature [35 references]
https://hal-cea.archives-ouvertes.fr/cea-01232791
Contributor : Emmanuelle de Laborderie <>
Submitted on : Tuesday, November 24, 2015 - 11:11:42 AM
Last modification on : Wednesday, April 14, 2021 - 12:12:10 PM
Long-term archiving on: : Friday, April 28, 2017 - 6:38:08 PM
Contributor : Emmanuelle de Laborderie <>
Submitted on : Tuesday, November 24, 2015 - 11:11:42 AM
Last modification on : Wednesday, April 14, 2021 - 12:12:10 PM
Long-term archiving on: : Friday, April 28, 2017 - 6:38:08 PM
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1407.1622v1.pdf
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