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Generalized Wilson Chain for solving multichannel quantum impurity problems

Abstract:

The Numerical Renormalization Group is used to solve quantum impurity problems, which describe magnetic impurities in metals, nanodevices, and correlated materials within DMFT. Here we present a simple generalization of the Wilson Chain, which improves the scaling of computational cost with the number of channels/bands, bringing new problems within reach. The method is applied to calculate the t-matrix of the three-channel Kondo model at T=0, which shows universal crossovers near non-Fermi li...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevB.89.121105

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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
Role:
Author
Publisher:
American Physical Society Publisher's website
Journal:
Phys. Rev. B
Volume:
89
Issue:
12
Pages:
121105
Publication date:
2013-08-08
DOI:
EISSN:
1550-235X
ISSN:
1098-0121
URN:
uuid:895412f7-941c-42d8-92d6-8117758e7bd8
Source identifiers:
418297
Local pid:
pubs:418297
Language:
English
Keywords:

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