Abstract
In this short paper we prove the global regularity of solutions to the Navier–Stokes equations under the assumption that slightly supercritical quantities are bounded. As a consequence, we prove that if a solution u to the Navier–Stokes equations blows-up, then certain slightly supercritical Orlicz norms must become unbounded. This partially answers a conjecture recently made by Terence Tao. The proof relies on quantitative regularity estimates at the critical level and transfer of subcritical information on the initial data to arbitrarily large times. This method is inspired by a recent paper of Aynur Bulut, where similar results are proved for energy supercritical nonlinear Schrödinger equations.
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Notes
This means that there exists a universal constant \(N_{univ}\in [1,\infty )\) such that for all \(M\ge N_{univ}\) and \(E\ge N_{univ}\) we have the result.
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Acknowledgements
The second author is grateful to Patrick Gérard for bringing to his attention the result of Aynur Bulut [7].
Funding
The first author is supported by a Leverhulme Early Career Fellowship funded by The Leverhulme Trust. The second author is partially supported by the project BORDS Grant ANR-16-CE40-0027-01 and by the project SingFlows Grant ANR-18-CE40-0027 of the French National Research Agency (ANR).
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Communicated by G. Seregin.
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Barker, T., Prange, C. Mild Criticality Breaking for the Navier–Stokes Equations. J. Math. Fluid Mech. 23, 66 (2021). https://doi.org/10.1007/s00021-021-00591-1
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DOI: https://doi.org/10.1007/s00021-021-00591-1