Abstract
We show that the uniform radius of spatial analyticity \(\sigma (t)\) of solutions at time t to the cubic nonlinear Schrödinger equations (NLS) on the circle cannot decay faster than 1 / t as \( t \rightarrow \infty \), given initial data that is analytic with fixed radius \(\sigma _0\). The same decay rate has been recently established for cubic NLS on the real line.
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Tesfahun, A. Remark on the persistence of spatial analyticity for cubic nonlinear Schrödinger equation on the circle. Nonlinear Differ. Equ. Appl. 26, 12 (2019). https://doi.org/10.1007/s00030-019-0558-6
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DOI: https://doi.org/10.1007/s00030-019-0558-6