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String order parameters for 1d Floquet Symmetry Protected Topological Phases
Ajesh Kumar, Philipp T. Dumitrescu, Andrew C. Potter
Floquet symmetry protected topological (FSPT) phases are non-equilibrium topological phases enabled by time-periodic driving. FSPT phases of 1d chains of bosons, spins, or qubits h…
Thermodynamic signatures for the existence of Dirac electrons in ZrTe5
Nityan L. Nair, Philipp T. Dumitrescu, Sanyum Channa +4
We combine transport, magnetization, and torque magnetometry measurements to investigate the electronic structure of ZrTe5 and its evolution with temperature. At fields beyond the…
Logarithmically Slow Relaxation in Quasi-Periodically Driven Random Spin Chains
Philipp T. Dumitrescu, Romain Vasseur, Andrew C. Potter
We simulate the dynamics of a disordered interacting spin chain subject to a quasi-periodic time-dependent drive, corresponding to a stroboscopic Fibonacci sequence of two distinct…
An infinite family of 3d Floquet topological paramagnets
Andrew C. Potter, Ashvin Vishwanath, Lukasz Fidkowski
We uncover an infinite family of time-reversal symmetric 3d interacting topological insulators of bosons or spins, in time-periodically driven systems, which we term Floquet topolo…
Localization-protected order in spin chains with non-Abelian discrete symmetries
Aaron J. Friedman, Romain Vasseur, Andrew C. Potter +1
We study the non-equilibrium phase structure of the three-state random quantum Potts model in one dimension. This spin chain is characterized by a non-Abelian symmetry recent…
Interacting invariants for Floquet phases of fermions in two dimensions
Lukasz Fidkowski, Hoi Chun Po, Andrew C. Potter +1
We construct a many-body quantized invariant that sharply distinguishes among two dimensional non-equilibrium driven phases of interacting fermions. This is an interacting generali…