Analysis Seminar

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Homogenization results for Schrodinger operators with wildly varying potentials

Speaker: Alexis Drouot, Columbia U.

Location: Warren Weaver Hall 1302

Date: Thursday, October 26, 2017, 11 a.m.

Synopsis:

I will study eigenvalues and resonances of Schrodinger operators with potential varying wildly at a small scale epsilon. 

The variations are either deterministic or random. Using analytic Fredholm theory and estimates on oscillatory integrals, we will see that as epsilon goes to 0:

   - In the deterministic case, resonances/eigenvalues admit a full expansion in powers of epsilon, whose first terms are best described by an effective potential;

   - In the stochastic case, resonances/eigenvalues converge almost surely to those of the weak limit of the potential, with corrections satisfying a central limit theorem.