Fluctuations of the solutions to the KPZ equation in dimensions three and higher
classification
🧮 math.PR
math-phmath.MP
keywords
equationfluctuationsspacealternativeanalysisavoidscitecolored
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We prove, using probabilistic techniques and analysis on the Wiener space, that the large scale fluctuations of the KPZ equation in $d\geq 3$ with a small coupling constant, driven by a white in time and colored in space noise, are given by the Edwards-Wilkinson model. This gives an alternative proof, that avoids perturbation expansions, to the results of Magnen and Unterberger \cite{magnen2017diffusive}.
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