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Séminaire de probabilités et physique statistique de l'IHES

Extremal and local statistics for gradient field models

by Prof. Wei Wu (The University of Warwick)

jeudi 14 décembre 2017 de au (Europe/Paris)
at IHES ( Amphithéâtre Léon Motchane )
Le Bois-Marie 35, route de Chartres 91440 Bures-sur-Yvette

We study the gradient field models with uniformly convex potential (also known as the Ginzburg-Landau field) in two dimension. These log-correlated non-Gaussian random fields arise in different branches of statistical mechanics. Existing results were mainly focused on the CLT for the linear functionals. In this talk I will describe some recent progress on the global maximum and local CLT for the field, thus confirming they are in the Gaussian universality class in a very strong sense. The proof uses a random walk representation (a la Helffer-Sjostrand) and an approximate harmonic coupling (by J. Miller).

Organisé par Hugo Duminil-Copin
Contact Email: cecile@ihes.fr