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Gutzwiller renormalization group

TitleGutzwiller renormalization group
Publication TypeJournal Article
Year of Publication2016
AuthorsLanata, N, Yao, YX, Deng, XY, Wang, CZ, Ho, KM, Kotliar, G
JournalPhysical Review B
Volume93
Pagination045103
Date Published01
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000367665400002
Keywordsferromagnetism, kondo problem, model, quantum, systems, transition-metals
Abstract

(GRG), which enables us to calculate the ground state of Anderson impurity models (AIM) with arbitrary numerical precision. Our method exploits the low-entanglement property of the ground state of local Hamiltonians in combination with the framework of the Gutzwiller wave function and indicates that the ground state of the AIM has a very simple structure, which can be represented very accurately in terms of a surprisingly small number of variational parameters. We perform benchmark calculations of the single-band AIM that validate our theory and suggest that the GRG might enable us to study complex systems beyond the reach of the other methods presently available and pave the way to interesting generalizations, e.g., to nonequilibrium transport in nanostructures.

DOI10.1103/PhysRevB.93.045103
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Exploratory Theory