Discrete Time Quasi-Crystals
Abstract
Between space crystals and amorphous materials there exists a third class of aperiodic structures which lack translational symmetry but reveal long-range order. They are dubbed quasi-crystals and their formation, similarly as the formation of space crystals, is related to spontaneous breaking of translational symmetry of underlying Hamiltonians. Here, we investigate spontaneous emergence of quasi-crystals in periodically driven systems. We consider a quantum many-body system which is driven by a harmonically oscillating force and show that interactions between particles result in spontaneous self-reorganization of the motion of a quantum many-body system and in the formation of a quasi-crystal structure in time.
Cite
@article{arxiv.1807.02105,
title = {Discrete Time Quasi-Crystals},
author = {Krzysztof Giergiel and Arkadiusz Kuroś and Krzysztof Sacha},
journal= {arXiv preprint arXiv:1807.02105},
year = {2019}
}
Comments
Version accepted for publication in Phys. Rev. B as a Rapid Communication