Floquet Quantum Criticality
Disordered Systems and Neural Networks
2018-09-25 v2 Statistical Mechanics
Strongly Correlated Electrons
Abstract
We study transitions between distinct phases of one-dimensional periodically driven (Floquet) systems. We argue that these are generically controlled by infinite-randomness fixed points of a strong-disorder renormalization group procedure. Working in the fermionic representation of the prototypical Floquet Ising chain, we leverage infinite randomness physics to provide a simple description of Floquet (multi)criticality in terms of a new type of domain wall associated with time-translational symmetry-breaking and the formation of `Floquet time crystals'. We validate our analysis via numerical simulations of free-fermion models sufficient to capture the critical physics.
Cite
@article{arxiv.1803.00019,
title = {Floquet Quantum Criticality},
author = {William Berdanier and Michael Kolodrubetz and S. A. Parameswaran and Romain Vasseur},
journal= {arXiv preprint arXiv:1803.00019},
year = {2018}
}
Comments
8+7 pages, 3+4 figures; published version