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arXiv 1810.00526math.APmath-phmath.MP
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非线性薛定谔方程流对高斯测度的输运

Transport of gaussian measures by the flow of the nonlinear Schrödinger equation

F. Planchon, N. Tzvetkov, N. Visciglia

摘要:

证明了一维五次薛定谔方程解的一个新的光滑型性质。作为结果,我们证明了一族自然高斯测度在这个方程下是拟不变的。在散焦的情况下,我们证明了全球的时间准不变性,而在聚焦的情况下,由于爆破障碍,我们只能得到当地的时间准不变性。我们的结果也扩展到一般的奇次幂非线性。

英文摘要:

We prove a new smoothing type property for solutions of the 1d quintic Schrödinger equation. As a consequence, we prove that a family of natural gaussian measures are quasi-invariant under the flow of this equation. In the defocusing case, we prove global in time quasi-invariance while in the focusing case because of a blow-up obstruction we only get local in time quasi-invariance. Our results extend as well to generic odd power nonlinearities.

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