English

Random data Cauchy problem for the nonlinear Schr\"{o}dinger equation with derivative nonlinearity

Analysis of PDEs 2018-06-08 v1

Abstract

We consider the Cauchy problem for the nonlinear Schr\"{o}dinger equation with derivative nonlinearity (it+Δ)u=±(um)(i\partial _t + \Delta ) u= \pm \partial (\overline{u}^m) on Rd\R ^d, d1d \ge 1, with random initial data, where \partial is a first order derivative with respect to the spatial variable, for example a linear combination of x1,,xd\frac{\partial}{\partial x_1} , \, \dots , \, \frac{\partial}{\partial x_d} or =F1[ξF]|\nabla |= \mathcal{F}^{-1}[|\xi | \mathcal{F}]. We prove that almost sure local in time well-posedness, small data global in time well-posedness and scattering hold in Hs(Rd)H^s(\R ^d) with s>max(d1dsc,sc2,scd2(d+1))s> \max \left( \frac{d-1}{d} s_c , \frac{s_c}{2}, s_c - \frac{d}{2(d+1)} \right) for d+m5d+m \ge 5, where ss is below the scaling critical regularity sc:=d21m1s_c := \frac{d}{2}-\frac{1}{m-1}.

Keywords

Cite

@article{arxiv.1508.02161,
  title  = {Random data Cauchy problem for the nonlinear Schr\"{o}dinger equation with derivative nonlinearity},
  author = {Hiroyuki Hirayama and Mamoru Okamoto},
  journal= {arXiv preprint arXiv:1508.02161},
  year   = {2018}
}

Comments

25 pages

R2 v1 2026-06-22T10:29:45.902Z