Dynamical enhancement of symmetries in many-body systems
Statistical Mechanics
2020-09-29 v2 Quantum Physics
Abstract
We construct a dynamical decoupling protocol for accurately generating local and global symmetries in general many-body systems. Multiple commuting and non-commuting symmetries can be created by means of a self-similar-in-time ("polyfractal") drive. The result is an effective Floquet Hamiltonian that remains local and avoids heating over exponentially long times. This approach can be used to realize a wide variety of quantum models, and non-equilibrium quantum phases.
Keywords
Cite
@article{arxiv.1905.06389,
title = {Dynamical enhancement of symmetries in many-body systems},
author = {Kartiek Agarwal and Ivar Martin},
journal= {arXiv preprint arXiv:1905.06389},
year = {2020}
}
Comments
4 pages, 2 figures + references + supplementary. Close to final published version. Updated numerical results