Year: 2026
Type: article
Abstract: In this work we investigate discrete-time transport in a generic U(1)-symmetric disordered model tuned across an array of different dynamical regimes. We develop an aggregate quantity, a circular statistical moment, which is a simple function of the magnetization profile and which elegantly captures transport properties of the system. From this quantity we extract transport exponents, revealing behaviors across the phase diagram consistent with localized, diffusive, and - most interestingly for a disordered system - superdiffusive regimes. Investigation of this superdiffusive regime reveals the existence of a prethermal ''swappy'' regime unique to discrete-time systems in which excitations propagate coherently; even in the presence of strong disorder.
Source: npj Quantum Information
Institutions: Trinity College Dublin, Dublin Institute For Advanced Studies
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,290
Funder: Science Foundation Ireland
OpenAlex ID: W4404649491