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Open Quantum Systems Decoherence

Superdiffusive Transport in Quasi-Particle Dephasing Models

arXiv
Authors: Yu-Peng Wang, Chen Fang, Jie Ren

Year

2023

Paper ID

54136

Status

Preprint

Abstract Read

~2 min

Abstract Words

97

Citations

N/A

Abstract

Investigating the behavior of noninteracting fermions subjected to local dephasing, we reveal that quasi-particle dephasing can induce superdiffusive transport. This superdiffusion arises from nodal points within the momentum distribution of local dephasing quasi-particles, leading to asymptotic long-lived modes. By studying the dynamics of the Wigner function, we rigorously elucidate how the dynamics of these enduring modes give rise to Lévy walk processes, a renowned mechanism underlying superdiffusion phenomena. Our research demonstrates the controllability of dynamical scaling exponents by selecting quasi-particles and extends its applicability to higher dimensions, underlining the pervasive nature of superdiffusion in dephasing models.

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  • This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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  • Investigating the behavior of noninteracting fermions subjected to local dephasing, we reveal that quasi-particle dephasing can induce superdiffusive transport.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2310.03069 [2] arXiv https://arxiv.org/abs/2310.03069 [3] Publisher https://arxiv.org/abs/2310.03069

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