Emergent kinetic constraints, ergodicity breaking, and cooperative dynamics in noisy quantum systems

Everest, B. and Marcuzzi, M. and Garrahan, Juan P. and Lesanovsky, I. (2016) Emergent kinetic constraints, ergodicity breaking, and cooperative dynamics in noisy quantum systems. Physical Review E, 94 (5). 052108/1-052108/5. ISSN 2470-0053

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Abstract

Kinetically constrained spin systems play an important role in understanding key properties of the dynamics of slowly relaxing materials, such as glasses. Recent experimental studies have revealed that manifest kinetic constraints govern the evolution of strongly interacting gases of highly excited atoms in a noisy environment. Motivated by this development we explore which types of kinetically constrained dynamics can generally emerge in quantum spin systems subject to strong noise and show how, in this framework, constraints are accompanied by conservation laws. We discuss an experimentally realizable case of a lattice gas, where the interplay between those and the geometry of the lattice leads to collective behavior and time-scale separation even at infinite temperature. This is in contrast to models of glass-forming substances which typically rely on low temperatures and the consequent suppression of thermal activation.

Item Type: Article
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: https://doi.org/10.1103/PhysRevE.94.052108
Depositing User: Eprints, Support
Date Deposited: 03 Jan 2017 10:33
Last Modified: 03 Jan 2017 10:37
URI: http://eprints.nottingham.ac.uk/id/eprint/39549

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