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Open Quantum Systems Decoherence

Strong-damping limit of quantum Brownian motion in a disordered environment

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Authors: Arthur M. Faria, Marcus V. S. Bonança, Eric Lutz

Year

2026

Paper ID

59631

Status

Peer-reviewed

Abstract Read

~2 min

Abstract Words

81

Citations

0

Abstract

We consider a microscopic model of an inhomogeneous environment where an arbitrary quantum system is locally coupled to a harmonic bath via a finite-range interaction. We show that in the overdamped regime the position distribution obeys a classical Kramers-Moyal equation that involves an infinite number of higher-order derivatives, implying that the finite bath correlation length leads to non-Gaussian Markovian noise. We analytically solve the equation for a harmonically bound particle and analyze its non-Gaussian diffusion as well as its steady-state properties.

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  • This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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  • We consider a microscopic model of an inhomogeneous environment where an arbitrary quantum system is locally coupled to a harmonic bath via a finite-range interaction.

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References & Citation Signals

[1] DOI https://doi.org/10.1103/3nj5-hbdc [2] Publisher https://doi.org/10.1103/3nj5-hbdc

Local Citation Graph (Related-Paper Links)

Current Paper #59631 #69040 Collective Emission in LH2 Asse... #69031 Amplitude-dependent quantum hyd... #69030 Non-Hermitian Crystalline Braid... #69029 Higher-order Symmetric Quantum ...

External citation index: OpenAlex citation signal • updated 2026-06-13 14:10:48

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