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Resonant large deviations principle for the beating NLS equation

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arxiv 2408.05791 v1 pith:KNDVGPY3 submitted 2024-08-11 math.AP math-phmath.MP

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keywords equationbeatingdeviationsinitiallargemodesnonlinearprinciple
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We prove a large deviations principle for the solution to the beating NLS equation on the torus with random initial data supported on two Fourier modes. When these modes have different initial variance, we prove that the resonant energy exchange between them increases the likelihood of extreme wave formation. Our results show that nonlinear focusing mechanisms can lead to tail fattening of the probability measure of the sup-norm of the solution to a nonlinear dispersive equation.

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  1. Rogue waves and large deviations for 2D pure gravity deep water waves

    math.AP 2025-10 conditional novelty 8.0 of 10

    For the 2D pure-gravity deep-water water-wave equation, a crest of size λ0 ε^{1-δ} appears with probability exp(-λ0^2 ε^{-2δ}/(2σ^2)) up to the optimal nonlinear time scale.

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