ABCD of Kondo effect

Abstract

We explore the Kondo effect incorporating the localized impurity transforming under generic symmetry group $G$, that we call the $G$-Kondo effect. We derive the one-dimensional effective model coupled with the impurity, and studied the thermodynamic properties based on the boundary conformal field theory approach. We in particular study the impurity entropy at the conformal fixed point, and the low temperature behavior of the specific heat and the susceptibility. We also consider the Wilson ratio based on these results, and mention the case with exceptional group symmetry.

arXiv comment20 pages; minor changes, typos corrected, references added

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Cited by in corpus (10)

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• Topological symplectic Kondo effect
• Multichannel topological Kondo effect
• Heavy-quark spin polarization induced by the Kondo effect in a magnetic field
• Topological Quantum Computation on a Chiral Kondo Chain
• Topological Kondo effect with spinful Majorana fermions
• Dirac Kondo effect under magnetic catalysis
• Relevance of Anisotropy in the Kondo Effect: Lessons From the Symplectic Case
• QCD Kondo effect for single heavy quark in chiral-symmetry broken phase