English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

One of the general mechanisms that give rise to the slow cooperativerelaxation characteristic of classical glasses is the presence of kineticconstraints in the dynamics. Here we show that dynamical constraints cansimilarly lead to slow thermalization and metastability in translationallyinvariant quantum many-body systems. We illustrate this general idea byconsidering two simple models: (i) a one-dimensional quantum analogue toclassical constrained lattice gases where excitation hopping is constrained bythe state of neighboring sites, mimicking excluded-volume interactions of densefluids; and (ii) fully packed quantum dimers on the square lattice. Both modelshave a Rokhsar--Kivelson (RK) point at which kinetic and potential energyconstants are equal. To one side of the RK point, where kinetic energydominates, thermalization is fast. To the other, where potential energydominates, thermalization is slow, memory of initial conditions persists forlong times, and separation of timescales leads to pronounced metastabilitybefore eventual thermalization. Furthermore, in analogy with what occurs in therelaxation of classical glasses, the slow-thermalization regime displaysdynamical heterogeneity as manifested by spatially segregated growth ofentanglement.

Quantum Slow Relaxation and Metastability due to Dynamical Constraints