No repulsion between critical points for planar Gaussian random fields
01 Pubblicazione su rivista
Beliaev Dmitry, Cammarota Valentina, Wigman Igor
DOI: 10.1214/20-ECP362
ISSN: 1083-589X
We study the behaviour of the point process of critical points of isotropic stationary
Gaussian fields. We compute the main term in the asymptotic expansion of the
two-point correlation function near the diagonal. Our main result implies that for a
‘generic’ field the critical points neither repel nor attract each other. Our analysis
also allows to study how the short-range behaviour of critical points depends on their
index.