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The Inverse Scattering Transform for the Defocusing Nonlinear Schrödinger Equations with Nonzero Boundary Conditions
Author(s) -
Demontis F.,
Prinari B.,
Mee C.,
Vitale F.
Publication year - 2013
Publication title -
studies in applied mathematics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.164
H-Index - 46
eISSN - 1467-9590
pISSN - 0022-2526
DOI - 10.1111/j.1467-9590.2012.00572.x
Subject(s) - inverse scattering transform , inverse scattering problem , eigenfunction , mathematics , mathematical analysis , scattering , integral equation , inverse problem , boundary value problem , quantum inverse scattering method , scattering theory , nonlinear system , inverse , boundary (topology) , physics , eigenvalues and eigenvectors , quantum mechanics , geometry
A rigorous theory of the inverse scattering transform for the defocusing nonlinear Schrödinger equation with nonvanishing boundary valuesq ± ≡ q 0 e i θ ±as x → ± ∞ is presented. The direct problem is shown to be well posed for potentials q such that q x 02010 ; q ± ∈ L 1 , 2( R ± ) , for which analyticity properties of eigenfunctions and scattering data are established. The inverse scattering problem is formulated and solved both via Marchenko integral equations, and as a Riemann‐Hilbert problem in terms of a suitable uniform variable. The asymptotic behavior of the scattering data is determined and shown to ensure the linear system solving the inverse problem is well defined. Finally, the triplet method is developed as a tool to obtain explicit multisoliton solutions by solving the Marchenko integral equation via separation of variables.