Scaling in the geometrical features of the gradient contact process

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• Gunnar Pruessner, University of Warwick and Imperial College
• Tuesday 28 August 2007, 10:30-12:00
• British Antarctic Survey, Room 330B.

If you have a question about this talk, please contact Ryan Woodard.

Open to non-BAS; please contact Ryan Woodard (rywo@bas.ac.uk or 221383) if you would like to attend.

In order to identify the contact process as the universality class of the underlying microscopic mechanism in the generation of species boundaries, we study the geometrical features of the borderline and of clusters which form in a system, where the driving parameters of the contact process are subject to a (linear) change in space. Is it possible to infer the universality class of the reproduction mechanism in a biological system by looking at, say, areal photographs? The gradient contact process is closely related to gradient percolation and can be considered a correlated variant of it. What can be said about the borderline near the edge of extinction and how does that compare to gradient percolation?

This talk is part of the British Antarctic Survey series.

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