Stochastic PDEs with multiscale structure

Martin Hairer (University of Warwick)
David Kelly (University of Warwick)

Abstract


We study the spatial homogenisation of parabolic linear stochastic PDEs exhibiting a two-scale structure both at the level of the linear operator and at the level of the Gaussiandriving noise. We show that in some cases, in particular when the forcing is given by space time white noise, it may happen that the homogenised SPDE is not what one would expect from existing results for PDEs with more regular forcing terms.

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Pages: 1-38

Publication Date: July 13, 2012

DOI: 10.1214/EJP.v17-1807

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