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Article: Improved Hubbard-I approximation impurity solver for quantum impurity models

TitleImproved Hubbard-I approximation impurity solver for quantum impurity models
Authors
Issue Date2018
PublisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/Journals/jpcm
Citation
Journal of Physics: Condensed Matter, 2018, v. 31 n. 2, article no. 025601 How to Cite?
AbstractWe develop a fast impurity solver which is based on the combination of Hubbard-I approximation and hybridization expansion continuous-time quantum Monte Carlo algorithm. This solver inherits the advantages of both algorithms. In order to demonstrate the power and usefulness of this solver, we use it to study the magnetic phase transitions of single-band and two-band Hubbard models in the framework of single-site dynamical mean-field theory. The calculated results agree well with those obtained by hybridization expansion quantum impurity solver. It is suggested that this solver is very suitable to solve the multi-orbital quantum impurity models efficiently and can be used to study more realistic systems with magnetic long-range order in the future.
Persistent Identifierhttp://hdl.handle.net/10722/266566
ISSN
2017 Impact Factor: 2.617
2015 SCImago Journal Rankings: 0.812
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorQiu, HH-
dc.contributor.authorZhuang, J-
dc.contributor.authorHuang, L-
dc.contributor.authorZhao, JZ-
dc.contributor.authorDu, L-
dc.date.accessioned2019-01-23T04:35:18Z-
dc.date.available2019-01-23T04:35:18Z-
dc.date.issued2018-
dc.identifier.citationJournal of Physics: Condensed Matter, 2018, v. 31 n. 2, article no. 025601-
dc.identifier.issn0953-8984-
dc.identifier.urihttp://hdl.handle.net/10722/266566-
dc.description.abstractWe develop a fast impurity solver which is based on the combination of Hubbard-I approximation and hybridization expansion continuous-time quantum Monte Carlo algorithm. This solver inherits the advantages of both algorithms. In order to demonstrate the power and usefulness of this solver, we use it to study the magnetic phase transitions of single-band and two-band Hubbard models in the framework of single-site dynamical mean-field theory. The calculated results agree well with those obtained by hybridization expansion quantum impurity solver. It is suggested that this solver is very suitable to solve the multi-orbital quantum impurity models efficiently and can be used to study more realistic systems with magnetic long-range order in the future.-
dc.languageeng-
dc.publisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/Journals/jpcm-
dc.relation.ispartofJournal of Physics: Condensed Matter-
dc.rightsJournal of Physics: Condensed Matter. Copyright © Institute of Physics Publishing.-
dc.rightsThis is an author-created, un-copyedited version of an article published in [insert name of journal]. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/[insert DOI].-
dc.titleImproved Hubbard-I approximation impurity solver for quantum impurity models-
dc.typeArticle-
dc.identifier.doi10.1088/1361-648X/aaee95-
dc.identifier.pmid30524047-
dc.identifier.scopuseid_2-s2.0-85058448206-
dc.identifier.hkuros296633-
dc.identifier.volume31-
dc.identifier.issue2-
dc.identifier.spagearticle no. 025601-
dc.identifier.epagearticle no. 025601-
dc.identifier.isiWOS:000452715600001-
dc.publisher.placeUnited Kingdom-

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