English

Convergence to SPDE of the Schrodinger equation with large, random potential

Analysis of PDEs 2012-11-22 v1

Abstract

We study the asymptotic behavior of solutions to the Schr{\"o}dinger equation with large-amplitude, highly oscillatory, random potential. In dimension d<md<\mathfrak{m}, where m\mathfrak{m} is the order of the leading operator in the Schr\"odinger equation, we construct the heterogeneous solution by using a Duhamel expansion and prove that it converges in distribution, as the correlation length ε\varepsilon goes to 0, to the solution of a stochastic differential equation, whose solution is represented as a sum of iterated Stratonovich integral, over the space C([0,+),S)C([0,+\infty),\mathcal{S}'). The uniqueness of the limiting solution in a dense space of L2(Ω×Rd)L^2(\Omega\times\mathbb{R}^d) is shown by verifying the property of conservation of mass for the Schr\"odinger equation. In dimension d>md>\mathfrak{m}, the solution to the Schr{\"o}dinger equation is shown to converge in L2(Ω×Rd)L^2(\Omega\times\mathbb{R}^d) to a deterministic Schr{\"o}dinger solution in \cite{ZB-12}.

Keywords

Cite

@article{arxiv.1211.4894,
  title  = {Convergence to SPDE of the Schrodinger equation with large, random potential},
  author = {Ningyao Zhang and Guillaume Bal},
  journal= {arXiv preprint arXiv:1211.4894},
  year   = {2012}
}