Type: Seminar

Distribution: World

Expiry: 3 Dec 2010

Auth: carberry@60-241-127-220.static.tpgi.com.au (carberry) in SMS-WASM

JOINT COLLOQUIUM at University of Sydney NOTE: Lunch is at 1pm, i.e. BEFORE the seminar. ------------------ Date: Friday December 3 2010 Time: 2:30pm Venue: Carslaw 175 Speaker: Professor Jon Chapman, University of Oxford Title: Stochastic models of reaction diffusion Abstract: We consider two different position jump processes: (i) a random walk on a lattice (ii) the Euler scheme for the Smoluchowski differential equation. Both of these reduce to the diffusion equation as the time step and size of the jump tend to zero. We consider the problem of adding chemical reactions to these processes, both at a surface and in the bulk. We show how the "microscopic" parameters should be chosen to achieve the correct "macroscopic" reaction rate. This choice is found to depend on which stochastic model for diffusion is used. ----------------- Lunch is at 1pm, i.e. BEFORE the seminar. We will be leaving at 1pm from the 2nd floor of Carslaw to take the speaker to lunch at the Grandstand.