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arXiv · 1511.09362

Holographic impurities and Kondo effect

J. Erdmenger·M. Flory·C. Hoyos·M-N. Newrzella·A. O'Bannon·J. Wu
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Abstract

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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J. Erdmenger, M. Flory, C. Hoyos, M-N. Newrzella, A. O'Bannon, J. Wu. 2015-11-30. Holographic impurities and Kondo effect. https://doi.org/10.1002/prop.201500079

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