Analyse spectrale (non) autoadjointe sur des opérateurs de Schrödinger discrets
Diomba Sambou
IMT, Université de Toulouse III-Paul Sabatier
https://sites.google.com/site/diombasambou/
Date(s) : 02/03/2020 iCal
10h00 - 11h00
(Non) autoadjoint spectral analysis on discrete Schrödinger operators
We will consider the 1d Schrödinger operator H_0 acting on the space of sequences l^2(Z), and a compact perturbation V (not) self-joined. We will then relate the regularity properties of V to different spectral properties of the disturbed operator H_0 + V. In particular, the structure of the discrete spectrum and of the immersed eigenvalues will be studied. Our results will be based on an adequate combination of analytical dilation or distortion methods and resonance theory. Work in collaboration with Olivier Bourget and Amal Taarabt from the Catholic University of Santiago de Chile.
https://arxiv.org/abs/1807.01282
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