By employing a suitable multiplicative Itô noise with radial structure and with more than linear growth, we show the existence of a unique, global-in-time, strong solution for the stochastic Euler equations in two and three dimensions. More generally, we consider a class of stochastic partial differential equations (SPDEs) with a superlinear growth drift and suitable nonlinear, multiplicative Itô noise, with the stochastic Euler equations as a special case within this class. We prove that the addition of such a noise effectively prevents blow-ups in the solution of these SPDEs.

No blow-up by nonlinear Itô noise for the Euler equations

Bagnara, Marco
;
Maurelli, Mario
;
2025

Abstract

By employing a suitable multiplicative Itô noise with radial structure and with more than linear growth, we show the existence of a unique, global-in-time, strong solution for the stochastic Euler equations in two and three dimensions. More generally, we consider a class of stochastic partial differential equations (SPDEs) with a superlinear growth drift and suitable nonlinear, multiplicative Itô noise, with the stochastic Euler equations as a special case within this class. We prove that the addition of such a noise effectively prevents blow-ups in the solution of these SPDEs.
2025
Settore MATH-03/B - Probabilità e statistica matematica
blow-up prevention; Euler equations; Lyapunov function; regularization by noise
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/155283
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