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Department of Mathematics,
University of California San Diego

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Math 248 - Real Analysis Seminar

Dr. Zhenghe Zhang

University of California Riverside

Anderson localization for potentials generated by hyperbolic transformations

Abstract:

I will present recent work on Anderson localization for Schrödinger operators generated by hyperbolic transformations. Specifically, we consider subshifts of finite type equipped with an ergodic measure that admits a bounded distortion property. We show that if the Lyapunov exponent is uniformly positive and satisfies a uniform large deviation theorem (LDT) on a compact interval, then the operator exhibits Anderson localization on that interval almost surely. For Hölder continuous potentials with small supremum norms, we establish uniform positivity and a uniform LDT away from an arbitrarily small neighborhood of a finite set. In particular, this yields full spectral localization for such potentials. This talk is based on joint work with A. Avila and D. Damanik.

Host: John N. Treuer

October 23, 2025

3:00 PM

APM 7218

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