On convex integration solutions to the surface quasi-geostrophic equation driven by generic additive noise

Florian Bechtold, Theresa Lange, Jörn Wichmann

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Abstract

We study the surface quasi-geostrophic equation driven by a generic additive noise process W. By means of convex integration techniques, we establish existence of weak solutions whenever the stochastic convolution z associated with W is well defined and fulfills certain regularity constraints. Quintessentially, we show that the so constructed solutions to the non-linear equation are controlled by z in a linear fashion. This allows us to deduce further properties of the so constructed solutions, without relying on structural probabilistic properties such as Gaussianity, Markovianity or a martingale property of the underlying noise W.

Original languageEnglish
Article number173
Number of pages38
JournalElectronic Journal of Probability
Volume29
DOIs
Publication statusPublished - 2024

Keywords

  • additive noise
  • convex integration
  • SQG equation
  • stochastic fluid dynamics
  • stochastic partial differential equations

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