5 papers
Anderson Localization: A Floquet operator Krylov space perspective
Hsiu-Chung Yeh, Aditi Mitra
The problem of Anderson localization, as well as the single particle localization-delocalizaton transition of the Aubry-André model, is studied employing operator Krylov space met…
Floquet operator dynamics and orthogonal polynomials on the unit circle
Hsiu-Chung Yeh, Aditi Mitra
Operator spreading under stroboscopic time evolution due to a unitary is studied. An operator Krylov space is constructed and related to orthogonal polynomials on a unit circle (OP…
Moment method and continued fraction expansion in Floquet Operator Krylov Space
Hsiu-Chung Yeh, Aditi Mitra
Recursion methods such as Krylov techniques map complex dynamics to an effective non-interacting problem in one dimension. For example, the operator Krylov space for Floquet dynami…
Gapless Floquet topology
Gabriel Cardoso, Hsiu-Chung Yeh, Leonid Korneev +2
Symmetry-protected topological (SPT) phases in insulators and superconductors are known for their robust edge modes, linked to bulk invariants through the bulk-boundary corresponde…
A Universal Model of Floquet Operator Krylov Space
Hsiu-Chung Yeh, Aditi Mitra
It is shown that the stroboscopic time-evolution under a Floquet unitary, in any spatial dimension, and of any Hermitian operator, can be mapped to an operator Krylov space which i…