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  Poor man's scaling: anisotropic Kondo and Coqblin-Schrieffer models

Kogan, E. (2018). Poor man's scaling: anisotropic Kondo and Coqblin-Schrieffer models. Journal of physics communications, 2(8): 085001. doi:10.1088/2399-6528/aad484.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0002-66A4-2 Version Permalink: https://hdl.handle.net/21.11116/0000-0003-3A14-6
Genre: Journal Article

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Kogan, Eugene1, Author           
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1Max Planck Institute for the Physics of Complex Systems, Max Planck Society, ou_2117288              

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 MPIPKS: Ultracold matter
 Abstract: We discuss Kondo effect for a general model, describing a quantum impurity with degenerate energy levels, interacting with a gas of itinerant electrons, and derive scaling equation to the second order for such a model. We show how the scaling equation for the spin-anisotropic Kondo model with the power law density of states (DOS) for itinerant electrons follows from the general scaling equation. We introduce the anisotropic Coqblin-Schrieffer model, apply the general method to derive scaling equation for that model for the power law DOS, and integrate the derived equation analytically.

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Language(s): eng - English
 Dates: 2018-08-012018-08-01
 Publication Status: Issued
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 Identifiers: ISI: 000444308200001
DOI: 10.1088/2399-6528/aad484
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Title: Journal of physics communications
Source Genre: Journal
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Publ. Info: Bristol, UK : IOP Publishing
Pages: - Volume / Issue: 2 (8) Sequence Number: 085001 Start / End Page: - Identifier: ISSN: 2399-6528
CoNE: https://pure.mpg.de/cone/journals/resource/2399-6528