Abstract
The solvability of the Cauchy problem for the Nonlinear Nonfocusing Schrödinger equation (NNSE) with almost periodic initial data satisfying certain conditions is studied. It is shown that solutions are uniform almost periodic functions with respect to each variable. An example of initial data with Cantor-type spectrum is given. The Cauchy problem for NNSE is solved in the class of limit periodic functions which are well approximated by periodic ones.
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de Monvel, A.B., Egorova, I. On solutions of nonlinear Schrödinger equations with Cantor-type spectrum. J. Anal. Math. 72, 1–20 (1997). https://doi.org/10.1007/BF02843151
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DOI: https://doi.org/10.1007/BF02843151