Echo Chains as a Linear Mechanism: Norm Inflation, Modified Exponents and Asymptotics.
Echo Chains as a Linear Mechanism: Norm Inflation, Modified Exponents and Asymptotics.
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DOI:
10.1007/s00205-021-01697-6
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发表时间:
2021
影响因子:
2.5
通讯作者:
Zillinger C
中科院分区:
文献类型:
--
作者:
Deng Y;Zillinger C
In this article we show that the Euler equations, when linearized around a low frequency perturbation to Couette flow, exhibit norm inflation in Gevrey-type spaces as time tends to infinity. Thus, echo chains are shown to be a (secondary) linear instability mechanism. Furthermore, we develop a more precise analysis of cancellations in the resonance mechanism, which yields a modified exponent in the high frequency regime. This allows us, in addition, to remove a logarithmic constraint on the perturbations present in prior works by Bedrossian, Deng and Masmoudi, and to construct solutions which are initially in a Gevrey class for which the velocity asymptotically converges in Sobolev regularity but diverges in Gevrey regularity.
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DOI:
10.1093/amrx/abt009
发表时间:
2014-01-01
期刊:
APPLIED MATHEMATICS RESEARCH EXPRESS
影响因子:
--
作者:
Bedrossian, Jacob;Masmoudi, Nader
通讯作者:
Masmoudi, Nader
影响因子:
4.6
作者:
Vanneste, J;Morrison, PJ;Warn, T
通讯作者:
Warn, T
影响因子:
3.7
作者:
Mouhot, Clement;Villani, Cedric
通讯作者:
Villani, Cedric
影响因子:
6.2
作者:
Bedrossian, Jacob;Masmoudi, Nader
通讯作者:
Masmoudi, Nader
影响因子:
3
作者:
Wei, Dongyi;Zhang, Zhifei;Zhao, Weiren
通讯作者:
Zhao, Weiren