336 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Xiamen UniversityCN19 papers
- National University of SingaporeSG9 papers
- University of GdańskPL9 papers
- University of South WalesGB5 papers
- Nanyang Technological UniversitySG4 papers
- Swansea UniversityGB4 papers
- Başkent UniversityTR3 papers
- Brookhaven National LaboratoryUS3 papers
- Indian Institute of Technology RoorkeeIN3 papers
- National University of Sciences and TechnologyPK3 papers
- Rice UniversityUS3 papers
- University of ConnecticutUS3 papers
7 papers · 1 filter
Exact mobility edges for almost-periodic CMV matrices via gauge symmetries
Christopher Cedzich, Jake Fillman, Long Li +2
We investigate the symmetries of so-called generalized extended CMV matrices. It is well-documented that problems involving reflection symmetries of standard extended CMV matrices…
Almost Everything About the Unitary Almost Mathieu Operator
Christopher Cedzich, Jake Fillman, Darren C. Ong
We introduce a unitary almost-Mathieu operator, which is obtained from a two-dimensional quantum walk in a uniform magnetic field. We exhibit a version of Aubry--André duality for…
On Simon's Hausdorff Dimension Conjecture
David Damanik, Jake Fillman, Shuzheng Guo +1
Barry Simon conjectured in 2005 that the Szegő matrices, associated with Verblunsky coefficients obeying for…
Subordinacy Theory for Extended CMV Matrices
Shuzheng Guo, David Damanik, Darren C. Ong
We develop subordinacy theory for extended CMV matrices. That is, we provide explicit supports for the singular and absolutely continuous parts of the canonical spectral measure as…
Sharp spectral transition for eigenvalues embedded into the spectral bands of perturbed periodic operators
Wencai Liu, Darren C. Ong
In this paper, we consider the Schrödinger equation, \begin{equation*} Hu=-u^{\prime\prime}+(V(x)+V_0(x))u=Eu, \end{equation*} where is 1-periodic and is a decayin…
Generalized Toda flows
Darren C. Ong, Christian Remling
The classical hierarchy of Toda flows can be thought of as an action of the (abelian) group of polynomials on Jacobi matrices. We present a generalization of this to the larger gro…
Purely Singular Continuous Spectrum for Limit-Periodic CMV Operators with Applications to Quantum Walks
Jake Fillman, Darren C. Ong
We show that a generic element of a space of limit-periodic CMV operators has zero-measure Cantor spectrum. We also prove a Craig--Simon type theorem for the density of states meas…