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Spatial decorrelation of KPZ from narrow wedge

Gu, Yu et al.
arXiv (OAI Expanded) · Papers
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probability
We study the spatial decorrelation of the solution to the KPZ equation with narrow wedge initial data. For fixed $t>0$, we determine the decay rate of the spatial covariance function, showing that ${\rm Cov}[h(t,x),h(t,0)]\sim \frac{t}{x}$ as $x\to\infty$. In addition, we prove that the finite-dimen
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