One uniqueness to rule them all

Let AA be the function defining the Zakharov–Shabat reflection coefficient, let

r(z)=\IR\rmdue\IzuA(u),r(z)=-\I \int_\R \rmd u \, e^{\I z u}A(u),

and let AsA_s be the associated operator, with kernel Ks=As2K_s=A_s^2. Consider the Riemann–Hilbert problem associated to the Zakharov–Shabat system with reflection coefficient rr. One uniqueness to rule them all. The Riemann–Hilbert problem is uniquely solvable if and only if the determinantal point process with kernel KsK_s is uniquely defined. The conjecture proposes an equivalence between uniqueness of the Zakharov–Shabat Riemann–Hilbert solution and uniqueness of the corresponding determinantal point process, linking the analytic and probabilistic descriptions.

Sources & referencesView supporting material

Primary source

Alexandre Krajenbrink, “From Painlevé to Zakharov-Shabat and beyond: Fredholm determinants and integro-differential hierarchies”, arXiv:2008.01509 (2020).

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