2022
DOI: 10.48550/arxiv.2210.16429
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Components and Exit Times of Brownian Motion in two or more $p$-Adic Dimensions

Abstract: The fundamental solution of a pseudo-differential equation for functions defined on the d-fold product of the p-adic numbers, Q p , induces an analogue of the Wiener process in Q d p . As in the real setting, the components are 1-dimensional p-adic Brownian motions with the same diffusion constant and exponent as the original process. Asymptotic analysis of the conditional probabilities shows that the vector components are dependent for all time. Exit time probabilities for the higher dimensional processes rev… Show more

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