Emergent kinetic constraints in open quantum systems

TL;DR

This paper explores how kinetic constraints naturally emerge in open quantum spin systems under strong noise, revealing collective behaviors and dynamical simplifications relevant to experimental atomic gases.

Contribution

It demonstrates the emergence of kinetically constrained dynamics in noisy quantum spin systems, connecting theoretical models with recent experimental observations.

Findings

Emergence of kinetic constraints in open quantum systems.

Identification of collective behavior and timescale separation.

Relevance to experimental strongly interacting atomic gases.

Abstract

Kinetically constrained spin systems play an important role in understanding key properties of the dynamics of slowly relaxing materials, such as glasses. So far kinetic constraints have been introduced in idealised models aiming to capture specific dynamical properties of these systems. However, recently it has been experimentally shown by [M. Valado et al., arXiv:1508.04384 (2015)] that manifest kinetic constraints indeed govern the evolution of strongly interacting gases of highly excited atoms in a noisy environment. Motivated by this development we address and discuss the question concerning the type of kinetically constrained dynamics which can generally emerge in quantum spin systems subject to strong noise. We discuss an experimentally-realizable case which displays collective behavior, timescale separation and dynamical reducibility.