Journal
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS
Volume 64, Issue 4-5, Pages 322-329Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/prop.201500079
Keywords
AdS/CFT; Entanglement Entropy; g-theorem; Kondo effect
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Magnetic impurities are responsible for many interesting phenomena in condensed matter systems, notably the Kondo effect and quantum phase transitions. Here we present a holographic model of a magnetic impurity that captures the main physical properties of the large-spin Kondo effect. We estimate the screening length of the Kondo cloud that forms around the impurity from a calculation of entanglement entropy and show that our results are consistent with the g-theorem.
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