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14 Marzo, 2022 17:30 in punto
Sezione di Probabilità e Statistica Matematica

No repulsion between critical points for random plane wave and planar Gaussian random fields.

Valentina Cammarota, Università di Roma La Sapienza
Abstract

Random plane wave is conjectured to be a universal model for high-energy eigenfunctions of the Laplace operator on generic compact Riemannian manifolds. This is known to be true on average. We discuss one of important geometric observable: critical points. We first compute one-point function for the critical point process, in particular we compute the expected number of critical points inside any open set. After that we compute the short-range asymptotic behaviour of the two-point function. This gives an unexpected result that the second factorial moment of the number of critical points in a small disc scales as the fourth power of the radius. Joint work with Dmitry Beliaev and Igor Wigman.

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