Real-space structure of the impurity screening cloud in the Resonant Level Model

Shreyoshi Ghosh; Pedro Ribeiro; Masudul Haque

doi:10.1088/1742-5468/2014/04/p04011

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arXiv · 1309.0027

Real-space structure of the impurity screening cloud in the Resonant Level Model

Shreyoshi Ghosh·Pedro Ribeiro·Masudul Haque

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Abstract

We present a detailed investigation of the impurity screening cloud in the Resonant Level Model. The screening is visible in the structure of impurity-bath correlators as a function of distance from the impurity. We characterize the screening cloud through scaling analyses of impurity-bath correlators and entanglement entropies. We devise and study several situations where the screening cloud is destroyed or modified: finite temperatures, energetic detuning of the impurity from the chemical potential, and the situation of an unconventional bath with diverging density of states.

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Shreyoshi Ghosh, Pedro Ribeiro, Masudul Haque. 2014-08-07. Real-space structure of the impurity screening cloud in the Resonant Level Model. https://doi.org/10.1088/1742-5468%2F2014%2F04%2Fp04011

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