The discrete Gaussian free field on a compact manifold

Alessandra Cipriani and Bart van Ginkel

Stochastic Processes and their Applications, 2020, vol. 130, issue 7, 3943-3966

Abstract: In this article we define the discrete Gaussian free field (DGFF) on a compact manifold. Since there is no canonical grid approximation of a manifold, we construct a random graph that suitably replaces the square lattice Zd in Euclidean space, and prove that the scaling limit of the DGFF is given by the manifold continuum Gaussian free field (GFF). Furthermore using Voronoi tessellations we can interpret the DGFF as element of a Sobolev space and show convergence to the GFF in law with respect to the strong Sobolev topology.

Date: 2020
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DOI: 10.1016/j.spa.2019.11.005

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