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arXiv · 2507.03763

Direct signatures of Anderson orthogonality catastrophe in nonequilibrium quantum dots

Sarath Sankar·Joshua Folk·Yigal Meir·Eran Sela
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Abstract

We propose schemes for unambiguous direct observation of Anderson orthogonality catastrophe (AOC) effects in a quantum dot coupled to a charge detector, allowing to estimate the AOC exponent $\alpha$. We show that certain easy-to-measure observables have a robust dependence on $\alpha$ in the non-equilibrium regimes of source-drain voltage bias or thermal imbalance. Our results are obtained using a rate equation formalism in which the AOC effects on tunnel rates are incorporated in an exact manner, and directly support recent experimental results.

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Sarath Sankar, Joshua Folk, Yigal Meir, Eran Sela. 2025-07-04. Direct signatures of Anderson orthogonality catastrophe in nonequilibrium quantum dots. https://arxiv.org/abs/2507.03763

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