Sub-Ohmic two-level system representation of the Kondo effect

It has been recently shown that the particle-hole symmetric Anderson impurity model can be mapped onto a Z sub(2) slave-spin theory without any need of additional constraints. Here, we prove by means of numerical renormalization group that the slave-spin behaves in this model like a two-level system...

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Veröffentlicht in:	Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2012-02, Vol.85 (7), Article 073106
Hauptverfasser:	Baruselli, Pier Paolo, Fabrizio, Michele
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter Correlation Dissipation Gages Gauges Kondo effect Mathematical models Symmetry
Online-Zugang:	Volltext
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