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Stability threshold of the two-dimensional Couette flow in the whole plane
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abstract
In this paper, we study the stability threshold for the two-dimensional Couette flow in the whole plane. Our main result establishes that the asymptotic stability threshold is at most $\frac{1}{3}+$ for Sobolev perturbations with additional control over low horizontal frequencies, aligning with the threshold results in periodic domains. As a secondary outcome of our approach, we also prove the asymptotic stability for perturbations in weak Sobolev regularity with size $\nu^{\frac{1}{2}}$.
Forward citations
Cited by 2 Pith papers
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Suppression of blow-up in 3-D Keller-Segel system with fractional diffusion via Couette flow in whole space
A large Couette flow suppresses finite-time blow-up and yields algebraic decay for the fractional Keller-Segel equation on R^3 for diffusion exponent alpha in (1,2].
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Improved stability threshold for 2D Navier-Stokes Couette flow in an infinite channel
The ν^{1/2} stability threshold for 2D Navier-Stokes Couette flow in an infinite channel with Navier slip is proven, with no logarithmic loss, sharpening the Arbon-Bedrossian threshold.
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