Solving the 4NLS with white noise initial data
Solving the 4NLS with white noise initial data
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用白噪声初始数据求解 4NLS
DOI:
10.1017/fms.2020.51
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发表时间:
2019
期刊:
影响因子:
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通讯作者:
Yuzhao Wang
中科院分区:
文献类型:
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作者:
Tadahiro Oh;N. Tzvetkov;Yuzhao Wang
Abstract We construct global-in-time singular dynamics for the (renormalized) cubic fourth-order nonlinear Schrödinger equation on the circle, having the white noise measure as an invariant measure. For this purpose, we introduce the ‘random-resonant / nonlinear decomposition’, which allows us to single out the singular component of the solution. Unlike the classical McKean, Bourgain, Da Prato-Debussche type argument, this singular component is nonlinear, consisting of arbitrarily high powers of the random initial data. We also employ a random gauge transform, leading to random Fourier restriction norm spaces. For this problem, a contraction argument does not work, and we instead establish the convergence of smooth approximating solutions by studying the partially iterated Duhamel formulation under the random gauge transform. We reduce the crucial nonlinear estimates to boundedness properties of certain random multilinear functionals of the white noise.
DOI:
10.5802/aif.3454
发表时间:
2022
期刊:
Annales de l'Institut Fourier
影响因子:
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作者:
Oh T
通讯作者:
Oh T