University of Cambridge > Talks.cam > Geometric Analysis & Partial Differential Equations seminar > A Kinetic Reaction Model: Decay to Equilibrium and Macroscopic Limit

A Kinetic Reaction Model: Decay to Equilibrium and Macroscopic Limit

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  • User Lukas Neumann, University Innsbruck
  • ClockMonday 07 March 2016, 15:00-16:00
  • HouseCMS, MR13.

If you have a question about this talk, please contact Amit Einav .

We propose a kinetic relaxation-model to describe a generation- recombination reaction of two species. Decay to the stationary solution is studied by using hypocoercivity of the linearized equations. Expo- nential decay of small perturbations can be shown for the full nonlinear problem. We will give a short comparison of recent methods for tack- ling such problems [1, 2, 3]. If time allows we will also discuss the macroscopic/fast-reaction limit and sketch a rigorous derivation using Entropy decay estimates. The macroscopic limit, in our case, is a non- linear diffusion equation for the difference of the position densities. This talk is based on joint work with C. Schmeiser (University Vienna).

This talk is part of the Geometric Analysis & Partial Differential Equations seminar series.

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