arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.01370math.APmath.PR
收藏

一个含分数阶噪声的非线性Schr{<$}dinger方程

A nonlinear Schr{ö}dinger equation with fractional noise

Aurélien Deya, Nicolas Schaeffer, Laurent Thomann

摘要:

研究了空间维数小于3的具有二次非线性项和时空分数阶扰动的随机薛定谔方程.当Hurst指数足够大时,我们用经典的方法证明了问题的局部适定性。然而,对于一个小的赫斯特指数,即使是方程的解释也需要一些照顾。在这种情况下,重整化过程必须进入画面,导致模型的威克型解释。我们的不动点论证涉及到薛定谔群的一些特殊的正则化性质,这使我们能够处理解的强不规则性。

英文摘要:

We study a stochastic Schr{ö}dinger equation with a quadratic nonlinearity and a space-time fractional perturbation, in space dimension less than 3. When the Hurst index is large enough, we prove local well-posedness of the problem using classical arguments. However, for a small Hurst index, even the interpretation of the equation needs some care. In this case, a renormalization procedure must come into the picture, leading to a Wick-type interpretation of the model. Our fixed-point argument then involves some specific regularization properties of the Schr{ö}dinger group, which allows us to cope with the strong irregularity of the solution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑