Mean conservation of nodal volume and connectivity measures for Gaussian ensembles
AuthorBeliaev, D; Muirhead, S; Wigman, I
Source TitleAdvances in Mathematics
University of Melbourne Author/sMuirhead, Stephen
AffiliationSchool of Mathematics and Statistics
Document TypeJournal Article
CitationsBeliaev, D., Muirhead, S. & Wigman, I. (2021). Mean conservation of nodal volume and connectivity measures for Gaussian ensembles. Advances in Mathematics, 378, pp.107521-107521. https://doi.org/10.1016/j.aim.2020.107521.
Access StatusThis item is embargoed and will be available on 2023-02-12
We study in depth the nesting graph and volume distribution of the nodal domains of a Gaussian field, which have been shown in previous works to exhibit asymptotic laws. A striking link is established between the asymptotic mean connectivity of a nodal domain (i.e. the vertex degree in its nesting graph) and the positivity of the percolation probability of the field, along with a direct dependence of the average nodal volume on the percolation probability. Our results support the prevailing ansatz that the mean connectivity and volume of a nodal domain is conserved for generic random fields in dimension d = 2 but not in d _ 3, and are applied to a number of concrete motivating examples.
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