Invariant tori for two-dimensional nonlinear Schrödinger equations with large forcing terms
Journal of Mathematical Physics(2019)
摘要
We prove an infinite dimensional Kolmogorov–Arnold–Moser theorem. As an application, we use the theorem to study the two-dimensional forced nonlinear Schrödinger equation with periodic boundary conditions, and we emphasize that the forced term is not small perturbation. We obtain a Whitney smooth family of small-amplitude quasiperiodic solutions which are partially hyperbolic.
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关键词
invariant tori,two-dimensional
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