A proof of the Anderson localization induced by the 2-dimensional white noise

Date
2025/07/11 Fri 15:30 - 17:00
Room
3号館552号室
Speaker
Naomasa Ueki
Affiliation
Kyoto University
Abstract

Spectral properties of a self-adjoint operator corresponding to a limit of Δ+ξε+cε as ε0 are invetigated, where Δ is the Laplacian  on R2,
ξε is a smooth approximation of the white noise ξ defined by exp(ε2Δ)ξ, and cε is a positive function of  ε diveging as ε0.
For sufficiently low energies, it is proven that phenomena of the Anderson localization occur: the spectrum is pure point and the corresponding eigenfunctions decay exponentially at infinity.
For the proof, the Wegner estimate and the multi scale analysis are modified appropriately.