Skew Brownian diffusions across Koch interfaces
Abstract: We consider planar skew Brownian motion (BM) across pre-fractal Koch interfaces $\partial \Omegan$ and moving on $\overline{\Omegan} \cup \Sigman= \Omegan_\varepsilon$. We study the asymptotic behaviour of the corresponding multiplicative additive functionals when thickness of $\Sigman$ and skewness coefficients vanish with different rates.
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