Publication

A frequency-independent bound on trigonometric polynomials of Gaussians and applications

Wenhao Zhao
2024

Abstract

We prove a frequency-independent bound on trigonometric functions of a class of singular Gaussian random fields, which arise naturally from weak universality problems for singular stochastic PDEs. This enables us to reduce the regularity assumption on the nonlinearity of the microscopic models (for pathwise convergence) in KPZ and dynamical Phi 4 3 in the previous works of Hairer-Xu and Furlan-Gubinelli to heuristically optimal thresholds required by PDE structures. (c) 2024 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar

Official source

https://infoscience.epfl.ch/entities/publication/e3dfd371-dde4-4c79-9e7b-5a063e0eceb8

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A frequency-independent bound on trigonometric polynomials of Gaussians and applications

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