Gibbs point processes on path space: existence, cluster expansion and uniqueness

Alexander Zass

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arXiv · 2106.14000

Gibbs point processes on path space: existence, cluster expansion and uniqueness

Alexander Zass

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Abstract

We present general existence and uniqueness results for marked models with pair interactions, exemplified through Gibbs point processes on path space. More precisely, we study a class of infinite-dimensional diffusions under Gibbsian interactions, in the context of marked point configurations: the starting points belong to $\mathbb{R}^d$, and the marks are the paths of Langevin diffusions. We use the entropy method to prove existence of an infinite-volume Gibbs point process and use cluster expansion tools to provide an explicit activity domain in which uniqueness holds.

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Alexander Zass. 2021-06-26. Gibbs point processes on path space: existence, cluster expansion and uniqueness. https://arxiv.org/abs/2106.14000

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