Wednesday, July 1, 2026 - 16:15 in online (Zoom)
Dispersive Estimates beyond the Potential Well
A talk in the Oberseminar Analysis series by
Amir Sagiv from New Jersey
| Abstract: |
Dispersive estimates quantify the rate at which waves spread and decay. Traditionally, such estimates are understood as perturbations of free evolution, e.g., the Laplacian with a localized potential. Motivated by problems in materials science, we consider settings in which this paradigm breaks down. We will first discuss the time-periodic Dirac equation, where one can construct mechanisms leading to anomalously slow dispersion. As time allows, we will also discuss periodic Jacobi operators on the half-line, which provide a discrete setting in which the relevant comparison dynamics is again periodic rather than free.
https://uni-bielefeld.zoom-x.de/j/64951709096?pwd=EfJynCkou8bBw77CsNYMuh88IrKazJ.1
Meeting-ID: 649 5170 9096
Passwort: 351532
Within the CRC this talk is associated to the project(s): A1 |
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