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arXiv 2301.02544math.AP
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陷阱中一维NLS的不变Gibbs测度

Invariant Gibbs measures for 1D NLS in a trap

Van Duong Dinh, Nicolas Rougerie

摘要:

考虑一维立方非线性Schr{<$}dinger方程在无穷远处的囚禁势行为类似于|x| s(s > 1).我们构造了与方程相关联的Gibbs测度,并证明了Cauchy问题在它们的支持下几乎必然是全局适定的。因此,吉布斯测度在方程的流动下确实是不变的。我们还解决建设和不变性的规范吉布斯措施,条件下的L2质量。

英文摘要:

We consider the one dimensional cubic nonlinear Schr{ö}dinger equation with trapping potential behaving like |x| s (s > 1) at infinity. We construct Gibbs measures associated to the equation and prove that the Cauchy problem is globally well-posed almost surely on their support. Consequently, the Gibbs measure is indeed invariant under the flow of the equation. We also address the construction and invariance of canonical Gibbs measures, conditioned on the L 2 mass.

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