DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Floquet insulators and lattice fermions beyond naive time discretization

Journal Article · · Physical Review Research

Periodically driven quantum systems known as Floquet insulators can host topologically protected bound states known as “ π modes” that exhibit response at half the frequency of the drive. Such states can also appear in undriven lattice field theories when time is discretized as a result of fermion doubling, raising the question of whether these two phenomena could be connected. Recently we demonstrated such a connection at the level of an explicit mapping between the spectra of a continuous-time Floquet model and a discrete-time undriven lattice fermion model. However, this mapping relied on a symmetry of the single-particle spectrum that is not present for generic drive parameters. Inspired by the example of the temporal Wilson term in lattice field theory, in this paper we extend this mapping to the full drive parameter space by allowing the parameters of the discrete-time model to be frequency-dependent. The spectra of the resulting lattice fermion models exactly match the quasienergy spectrum of the Floquet model in the thermodynamic limit. Our results demonstrate that spectral features characteristic of beyond-equilibrium physics in Floquet systems can be replicated in static systems with appropriate time discretization. Published by the American Physical Society 2024

Research Organization:
Iowa State Univ., Ames, IA (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
SC0021892
OSTI ID:
2282918
Journal Information:
Physical Review Research, Journal Name: Physical Review Research Journal Issue: 1 Vol. 6; ISSN PPRHAI; ISSN 2643-1564
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (48)

Floquet topological insulators journal January 2013
Ensemble fermions for electroweak dynamics and the fermion preheating temperature journal November 2013
A Rigorous Theory of Many-Body Prethermalization for Periodically Driven and Closed Quantum Systems journal June 2017
A method for simulating chiral fermions on the lattice journal August 1992
Chern-Simons currents and chiral fermions on the lattice journal March 1993
Absence of neutrinos on a lattice journal July 1981
Absence of neutrinos on a lattice journal December 1981
Absence of neutrinos on a lattice: Proof by homotopy theory journal February 1982
Sphaleron transitions and baryon asymmetry: A numerical, real-time analysis journal April 1991
Chiral fermions from lattice boundaries journal September 1993
Exactly massless quarks on the lattice journal January 1998
More about exactly massless quarks on the lattice journal May 1998
Real-time dynamics with fermions on a lattice journal August 1999
Floquet approach to ℤ2 lattice gauge theories with ultracold atoms in optical lattices journal September 2019
Realization of an anomalous Floquet topological system with ultracold atoms journal June 2020
Floquet engineering of topological metal states and hybridization of edge states with bulk states in dimerized two-leg ladders journal August 2020
Topological phase transition between a normal insulator and a topological metal state in a quasi-one-dimensional system journal June 2021
Band structure engineering and non-equilibrium dynamics in Floquet topological insulators journal May 2020
Universal high-frequency behavior of periodically driven systems: from dynamical stabilization to Floquet engineering journal March 2015
Time crystals: a review journal November 2017
Topological singularities and the general classification of Floquet–Bloch systems journal December 2015
Microwave Engineering of Programmable XXZ Hamiltonians in Arrays of Rydberg Atoms journal April 2022
Simulating Heisenberg interactions in the Ising model with strong drive fields journal October 2023
Floquet topological phase transitions in a periodically quenched dimer journal December 2022
Topological defects and gapless modes in insulators and superconductors journal September 2010
Topological characterization of periodically driven quantum systems journal December 2010
Floquet generation of Majorana end modes and topological invariants journal October 2013
Complex classes of periodically driven topological lattice systems journal March 2016
Classification of topological phases in periodically driven interacting systems journal May 2016
Phase structure of one-dimensional interacting Floquet systems. I. Abelian symmetry-protected topological phases journal June 2016
Long-range Heisenberg models in quasiperiodically driven crystals of trapped ions journal January 2017
Hamiltonian formulation of Wilson's lattice gauge theories journal January 1975
Solitons with fermion number ½ journal June 1976
A remnant of chiral symmetry on the lattice journal May 1982
Chern-Simons number diffusion and hard thermal loops on the lattice journal February 2000
Realization of the Hofstadter Hamiltonian with Ultracold Atoms in Optical Lattices journal October 2013
Topological Index for Periodically Driven Time-Reversal Invariant 2D Systems journal March 2015
Phase Structure of Driven Quantum Systems journal June 2016
Floquet Time Crystals journal August 2016
Solitons in Polyacetylene journal June 1979
Robust Dynamic Hamiltonian Engineering of Many-Body Spin Systems journal July 2020
Anomalous Edge States and the Bulk-Edge Correspondence for Periodically Driven Two-Dimensional Systems journal July 2013
Periodically Driven Quantum Systems: Effective Hamiltonians and Engineered Gauge Fields journal August 2014
Long-time Behavior of Isolated Periodically Driven Interacting Lattice Systems journal December 2014
Classification of Interacting Topological Floquet Phases in One Dimension journal October 2016
Colloquium: Topological insulators journal November 2010
Colloquium: Atomic quantum gases in periodically driven optical lattices journal March 2017
Discrete Time Crystals journal March 2020