English

The nonlinear Schr\"odinger equations with harmonic potential in modulation spaces

Analysis of PDEs 2018-10-17 v1

Abstract

We study nonlinear Schr\"odinger ituHu=F(u)i\partial_tu-Hu=F(u) (NLSH) equation associated to harmonic oscillator H=Δ+x2H=-\Delta +|x|^2 in modulation spaces Mp,q.M^{p,q}. When F(u)=(xγu2)u,F(u)= (|x|^{-\gamma}\ast |u|^2)u, we prove global well-posedness for (NLSH) in modulation spaces Mp,p(Rd)M^{p,p}(\mathbb R^d) (1p<2d/(d+γ),0<γ<min{2,d/2}). (1\leq p < 2d/(d+\gamma), 0<\gamma< \min \{ 2, d/2\}). When F(u)=(Ku2k)uF(u)= (K\ast |u|^{2k})u with KFLqK\in \mathcal{F}L^q (Fourier-Lebesgue spaces) or M,1M^{\infty,1} (Sj\"ostrand's class) or M1,,M^{1, \infty}, some local and global well-posedness for (NLSH) are obtained in some modulation spaces. When FF is real entire and F(0)=0F(0)=0, we prove local well-posedness for (NLSH) in M1,1.M^{1,1}. As a consequence, we can get local and global well-posedness for (NLSH) in a function spaces-which are larger than usual LspL^p_s-Sobolev spaces.

Keywords

Cite

@article{arxiv.1810.06556,
  title  = {The nonlinear Schr\"odinger equations with harmonic potential in modulation spaces},
  author = {Divyang G. Bhimani},
  journal= {arXiv preprint arXiv:1810.06556},
  year   = {2018}
}

Comments

23 pages. arXiv admin note: text overlap with arXiv:1810.04076

R2 v1 2026-06-23T04:40:23.371Z