Séminaire Analyse Numérique et EDP
Non local random Schrödinger operators, integrated density of states and localization
nov. 2021
Intervenant : Constanza Rojas-Molina
Institution : Université de Cergy
Heure : 14h00 - 15h00
Lieu : 3L8

In this talk we will review some recent results on the non local random Schrödinger operators, including the fractional Anderson model, a random Schrödinger operator driven by a fractional laplacian. The interest on the latter lies in their association to stable Levy processes, random walks with long jumps and anomalous diffusion. We discuss in this talk the interplay between the non-locality of the fractional laplacian and the localization properties of the random potential in the fractional Anderson model, in both the continuous and discrete settings. In the discrete setting we study the integrated density of states and show a fractional version of Lifshitz tails. This coincides with results obtained in the continuous setting by the probability community. This is based on joint work with M. Gebert (LMU Munich).

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