Intermittent singular solutions of the stationary 2D Navier-Stokes equations in sharp Sobolev spaces

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Main Authors: Ashkarian, Estepan, Bhargava, Ataleshvara, Gismondi, Nicholas, Novack, Matthew
Format: Preprint
Published: 2025
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author Ashkarian, Estepan
Bhargava, Ataleshvara
Gismondi, Nicholas
Novack, Matthew
author_facet Ashkarian, Estepan
Bhargava, Ataleshvara
Gismondi, Nicholas
Novack, Matthew
contents In this paper we construct non-trivial solutions to the stationary Navier-Stokes equations on the two dimensional torus which lie in $\bigcap_{ε\in (0,1)} L^{2-ε}(\mathbb{T}^2) \cap \dot H^{-ε}(\mathbb{T}^2)$. Due to the fact that our solutions are not square integrable, we must redefine the notion of solution. Our result gives a sharp extension of recent work of Lemarié-Rieusset, who proved a similar result in the space $\dot{H}^{-1} \cap {BMO}^{-1}$. The main new ingredient is the incorporation of intermittency into the construction of the solutions.
format Preprint
id arxiv_https___arxiv_org_abs_2506_00841
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Intermittent singular solutions of the stationary 2D Navier-Stokes equations in sharp Sobolev spaces
Ashkarian, Estepan
Bhargava, Ataleshvara
Gismondi, Nicholas
Novack, Matthew
Analysis of PDEs
In this paper we construct non-trivial solutions to the stationary Navier-Stokes equations on the two dimensional torus which lie in $\bigcap_{ε\in (0,1)} L^{2-ε}(\mathbb{T}^2) \cap \dot H^{-ε}(\mathbb{T}^2)$. Due to the fact that our solutions are not square integrable, we must redefine the notion of solution. Our result gives a sharp extension of recent work of Lemarié-Rieusset, who proved a similar result in the space $\dot{H}^{-1} \cap {BMO}^{-1}$. The main new ingredient is the incorporation of intermittency into the construction of the solutions.
title Intermittent singular solutions of the stationary 2D Navier-Stokes equations in sharp Sobolev spaces
topic Analysis of PDEs
url https://arxiv.org/abs/2506.00841