Generalized accuracy conjecture for the near-field limit of high-order rogue waves

Let {KnR2}n=1\{K_n\subset\mathbb{R}^2\}_{n=1}^\infty be a sequence of compact sets satisfying

limnn5/4sup(X,T)KnX=0andlimnn9/5sup(X,T)KnT=0.\lim_{n\to\infty}n^{-5/4}\sup_{(X,T)\in K_n}|X|=0\quad\text{and}\quad \lim_{n\to\infty}n^{-9/5}\sup_{(X,T)\in K_n}|T|=0.

Let ψ2n\psi_{2n} and ψ2n1\psi_{2n-1} denote the even- and odd-order finite rogue waves, and let Ψ+\Psi^+ and Ψ\Psi^- denote their corresponding infinite-order near-field limits. Generalized accuracy conjecture. Uniformly for (X,T)Kn(X,T)\in K_n,

limnsup(X,T)Knn1ψ2n(n1X,n2T)Ψ+(X,T)=0\lim_{n\to\infty}\sup_{(X,T)\in K_n}\left|n^{-1}\psi_{2n}(n^{-1}X,n^{-2}T)-\Psi^+(X,T)\right|=0

and

limnsup(X,T)Knn1ψ2n1(n1X,n2T)Ψ(X,T)=0.\lim_{n\to\infty}\sup_{(X,T)\in K_n}\left|n^{-1}\psi_{2n-1}(n^{-1}X,n^{-2}T)-\Psi^-(X,T)\right|=0.

This extends the near-field limit from fixed sets to sets whose spatial and temporal scales grow with nn under the stated bounds. In the original variables, X=o(n5/4)X=o(n^{5/4}) corresponds to x=o(n1/4)x=o(n^{1/4}), while T=o(n9/5)T=o(n^{9/5}) corresponds to t=o(n1/5)t=o(n^{-1/5}); the conjecture remains unverified in the supplied source.

Sources & referencesView supporting material

Primary source

Deniz Bilman, Liming Ling and Peter D. Miller, “Extreme Superposition: Rogue Waves of Infinite Order and the Painlevé-III Hierarchy”, arXiv:1806.00545 (2018).

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