.. DO NOT MODIFY: this file was automatically generated! :orphan: Seminar by Karsten Urban ================================= .. container:: sd-badge-seminar-container :bdg-primary-line:`Speaker` .. container:: sd-badge-next-text Karsten Urban (Universität Ulm) :bdg-primary-line:`Title` .. container:: sd-badge-next-text A reduced basis method for the Schrödinger equation :bdg-primary-line:`Date` .. container:: sd-badge-next-text * March 14, 2023 16:00 CET+0100 (Europe/Rome) * March 14, 2023 11:00 EDT-0400 (US/Eastern) * March 14, 2023 10:00 CDT-0500 (US/Central) * March 14, 2023 08:00 PDT-0700 (US/Pacific) :bdg-primary-line:`Abstract` .. container:: sd-badge-next-text We present a well-posed ultra-weak space-time variational formulation for the time-dependent version of the linear Schrödinger equation with an instationary Hamiltonian. We prove optimal inf-sup stability and introduce a space-time Petrov-Galerkin discretization with optimal discrete inf-sup stability. We show norm-preservation of the ultra-weak formulation. The inf-sup optimal Petrov-Galerkin discretization is shown to be asymptotically norm-preserving, where the deviation is shown to be in the order of the discretization. In addition, we introduce a Galerkin discretization, which has suboptimal inf-sup stability but exact norm-preservation. Numerical experiments underline the performance of the ultra-weak space-time variational formulation, especially for non-smooth initial data. :bdg-primary-line:`Recording` .. container:: sd-badge-next-text Watch the recording on `our YouTube channel `_.