Work

Direct signatures of Anderson orthogonality catastrophe in nonequilibrium quantum dots

Year: 2025

Type: preprint

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 $α$. We show that certain easy-to-measure observables have a robust dependence on $α$ 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.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2507.03763

Authors: Sankar, Sarath, Folk, Joshua, Meir, Yigal, Sela, Eran

Institutions: Ben-Gurion University of the Negev, Tel Aviv University, University of British Columbia

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: European Commission, Israel Science Foundation, University of Tokyo, Canada First Research Excellence Fund, Natural Sciences and Engineering Research Council of Canada, Army Research Office

Awards: G3236695045, G4722835768, G6309441655, G7261756762, G7452299184

OpenAlex ID: W4415345131

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