Category Archives: News

Preprint: Graph-to-local limit for the nonlocal interaction equation

Together with Antonio Esposito and Georg Heinze, we study a class of nonlocal partial differential equations presenting a tensor-mobility, in space, obtained asymptotically from nonlocal dynamics on localising infinite graphs. Our strategy relies on the variational structure of both equations, being a Riemannian and Finslerian gradient flow, respectively.… Read the rest

Preprint: Variational convergence of the Scharfetter-Gummel scheme

Together with Anastasiia Hraivoronska and Oliver Tse, we explore the convergence of the Scharfetter-Gummel scheme for the aggregation-diffusion equation using a variational approach. Our investigation involves obtaining a novel gradient structure for the finite volume scheme that works consistently for any nonnegative diffusion constant, which allows us to study the discrete-to-continuum and zero-diffusion limits simultaneously.… Read the rest

Published: Error estimates for a finite volume scheme for advection-diffusion equations with rough coefficients

The paper with Víctor Navarro-Fernández on Error estimates for a finite volume scheme for advection-diffusion equations with rough coefficients got published at ESAIM: Mathematical Modelling and Numerical Analysis (M2AN). In the revision (also on arXiv:2201.10411), we arrived at uniform errors estimate in the diffusion constant also in the limit of vanishing diffusion.… Read the rest

Preprint: Covariance-modulated optimal transport and gradient flows

Together with Martin Burger, Franca Hoffmann, Daniel Matthes and Matthias Erbar, we investigate a new dynamical optimal transport distance in which the energy to be minimised is modulated by the covariance matrix of the distribution. Such transport metrics arise naturally in mean-field limits of certain ensemble Kalman methods for solving inverse problems.… Read the rest

Registration open and call for contributions at workshop on model structures for non-equilibrium systems, April 2023

We open the call to register and contribute talks/posters at the workshop

“In search of model structures for non-equilibrium systems”,

which will take place at the University of Münster, April 2023 – 28. April 2023.

Please register using the link (the deadline for participation is March 27):