English

Almost Sure Scattering of the Energy Critical NLS in $d>6$

Analysis of PDEs 2023-10-03 v3

Abstract

We study the energy-critical nonlinear Schr\"{o}dinger equation with randomised initial data in dimensions d>6d>6. We prove that the Cauchy problem is almost surely globally well-posed with scattering for randomised super-critical initial data in Hs(Rd)H^s(\mathbb{R}^d) whenever s>max{4d13(2d1),d2+6d4(2d1)(d+2)}s>\max\{\frac{4d-1}{3(2d-1)},\frac{d^2+6d-4}{(2d-1)(d+2)}\}. The randomisation is based on a decomposition of the data in physical space, frequency space and the angular variable. This extends previously known results of Spitz in dimension 4. The main difficulty in the generalisation to high dimensions is the non-smoothness of the nonlinearity.

Keywords

Cite

@article{arxiv.2207.01399,
  title  = {Almost Sure Scattering of the Energy Critical NLS in $d>6$},
  author = {Katie Marsden},
  journal= {arXiv preprint arXiv:2207.01399},
  year   = {2023}
}

Comments

Updated to be consistent with the published version (in Communications in Pure and Applied Analysis)