Abstract
We consider the nonlinear Schrödinger equation with a defocusing nonlinearity which is mass-(super)critical and energy-subcritical. We prove uniform in time error estimates for the Lie–Trotter time splitting discretization. This uniformity in time is obtained thanks to a vectorfield which provides time decay estimates for the exact and numerical solutions. This vectorfield is classical in scattering theory and requires several technical modifications compared to previous error estimates for splitting methods.
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Communicated by Christian Lubich.
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RC was supported by Rennes Métropole through its AIS program and by Centre Henri Lebesgue, program ANR-11-LABX-0020-0.
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Carles, R., Su, C. Scattering and Uniform in Time Error Estimates for Splitting Method in NLS. Found Comput Math 24, 683–722 (2024). https://doi.org/10.1007/s10208-022-09600-9
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DOI: https://doi.org/10.1007/s10208-022-09600-9