A central limit theorem for pulled fronts in a random medium

نویسنده

  • James Nolen
چکیده

We consider solutions to a nonlinear reaction diffusion equation when the reaction term varies randomly with respect to the spatial coordinate. The nonlinearity is the KPP type nonlinearity. For a stationary and ergodic medium, and for certain initial condition, the solution develops a moving front that has a deterministic asymptotic speed in the large time limit. The main result of this article is a central limit theorem for the position of the front, in the supercritical regime, if the medium satisfies a mixing condition. 1

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عنوان ژورنال:
  • NHM

دوره 6  شماره 

صفحات  -

تاریخ انتشار 2011