paper

Quantitative Derivation and Scattering of the 3D Cubic NLS in the Energy Space

arXiv:2104.06086 · doi:10.1007/s40818-022-00126-5

Abstract

We consider the derivation of the defocusing cubic nonlinear Schrödinger equation (NLS) on from quantum -body dynamics. We reformat the hierarchy approach with Klainerman-Machedon theory and prove a bi-scattering theorem for the NLS to obtain convergence rate estimates under regularity. The convergence rate estimate we obtain is almost optimal for datum, and immediately improves if we have any extra regularity on the limiting initial one-particle state.

Revised according to the referee reports

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