Work

Nonequilibrium symmetry-protected topological order: Emergence of semilocal Gibbs ensembles

Year: 2024

Type: article

Abstract: A generic nonequilibrium quantum system relaxes locally into a state resembling a thermal one even when isolated from the environment. In one-dimensional systems at finite temperature, ordered phases are generally excluded. Consequently, although symmetry-protected topological order may be present at zero temperature, its emergence at late times is not expected. This paper uncovers a mechanism that allows symmetry-protected topological order to emerge away from equilibrium for arbitrarily long times. It is based on the existence of hidden (semilocal) symmetries associated with operators that represent local observables only in a symmetry-restricted Hilbert space.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.109.115117

Authors: Maurizio Fagotti, Vanja Marić, Lenart Zadnik

Institutions: Centre National de la Recherche Scientifique, Université Paris-Saclay, Laboratoire de Physique Théorique et Modèles Statistiques

Language: English

Topic: Quantum many-body systems

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funder: European Research Council

Award: G1199015881