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We consider the linear and nonlinear Schr{\"o}dinger equation with a spatial white noise as a potential in dimension 2. We prove existence and uniqueness of solutions thanks to a change of unknown originally used in [8] and conserved…

Analysis of PDEs · Mathematics 2016-12-08 Arnaud Debussche , Hendrik Weber

We study the stochastic cubic nonlinear Schr\"odinger equation (SNLS) with an additive noise on the one-dimensional torus. In particular, we prove local well-posedness of the (renormalized) SNLS when the noise is almost space-time white…

Analysis of PDEs · Mathematics 2019-02-19 Justin Forlano , Tadahiro Oh , Yuzhao Wang

We consider the nonlinear Schr\"odinger equation with multiplicative spatial white noise and an arbitrary polynomial nonlinearity on the two-dimensional full space domain. We prove global well-posedness by using a gauge-transform introduced…

Analysis of PDEs · Mathematics 2023-03-08 Arnaud Debussche , Ruoyuan Liu , Nikolay Tzvetkov , Nicola Visciglia

In this paper, we review several recent results concerning well-posedness of the one-dimensional, cubic Nonlinear Schrodinger equation (NLS) on the real line R and on the circle T for solutions below the L^2-threshold. We point out common…

Analysis of PDEs · Mathematics 2015-01-14 Tadahiro Oh , Catherine Sulem

Using an approach introduced by Hairer-Labb\' e we construct a unique global dynamics for the NLS on $\T^2$ with a white noise potential and an arbitrary polynomial nonlinearity. We build the solutions as a limit of classical solutions (up…

Probability · Mathematics 2023-07-05 N. Tzvetkov , N. Visciglia

We solve the Schr{\"o}dinger equation with logarithmic nonlinearity and multiplicative spatial white noise on R d with d $\le$ 2. Because of the nonlinearity, the regularity structures and the paracontrolled calculus can not be used. To…

Analysis of PDEs · Mathematics 2023-08-31 Quentin Chauleur , Antoine Mouzard

In this paper, we prove the global wellposedness of the Gross-Pitaevskii equation with white noise potential, i.e. a cubic nonlinear Schr{\"o}dinger equation with harmonic confining potential and spatial white noise multiplicative term.…

Analysis of PDEs · Mathematics 2023-11-20 Pierre Mackowiak

We demonstrate the systematic derivation of a class of discretizations of nonlinear Schr{\"o}dinger (NLS) equations for general polynomial nonlinearity whose stationary solutions can be found from a reduced two-point algebraic condition. We…

Exactly Solvable and Integrable Systems · Physics 2018-04-13 P. G. Kevrekidis , S. V. Dmitriev , A. A. Sukhorukov

We consider the stochastic nonlinear Schr\"odinger equations (SNLS) posed on $d$-dimensional tori with either additive or multiplicative stochastic forcing. In particular, for the one-dimensional cubic SNLS, we prove global well-posedness…

Analysis of PDEs · Mathematics 2018-03-08 Kelvin Cheung , Razvan Mosincat

We consider the nonlinear Schr\"odinger equation in three space dimensions with a focusing cubic nonlinearity and defocusing quintic nonlinearity and in the presence of an external inverse-square potential. We establish scattering in the…

Analysis of PDEs · Mathematics 2024-12-16 Alex H. Ardila , Jason Murphy

We prove two new results about the Cauchy problem for nonlinear Schroedinger equations on four-dimensional compact manifolds. The first one concerns global wellposedness for Hartree-type nonlinearities and includes approximations of cubic…

Analysis of PDEs · Mathematics 2007-05-23 P. Gérard , V. Pierfelice

In this study, we consider the nonlinear Sch\"odinger equation (NLS) with the zero-boundary condition on a two- or three-dimensional large finite cubic lattice. We prove that its solution converges to that of the NLS on the entire Euclidean…

Analysis of PDEs · Mathematics 2022-02-22 Younghun Hong , Chulkwang Kwak , Changhun Yang

We consider the Cauchy problem for the one-dimensional periodic cubic nonlinear Schr\"odinger equation (NLS) with initial data below L^2. In particular, we exhibit nonlinear smoothing when the initial data are randomized. Then, we prove…

Analysis of PDEs · Mathematics 2019-12-19 James Colliander , Tadahiro Oh

We consider the question of global existence of small, smooth, and localized solutions of a certain fractional semilinear cubic NLS in one dimension, $$i\partial_t u - \Lambda u = c_0{|u|}^2 u + c_1 u^3 + c_2 u \bar{u}^2 + c_3 \bar{u}^3,…

Analysis of PDEs · Mathematics 2012-09-25 Alexandru D. Ionescu , Fabio Pusateri

We consider the two-dimensional stochastic damped nonlinear wave equation (SdNLW) with the cubic nonlinearity, forced by a space-time white noise. In particular, we investigate the limiting behavior of solutions to SdNLW with regularized…

Analysis of PDEs · Mathematics 2020-05-22 Tadahiro Oh , Mamoru Okamoto , Tristan Robert

We consider the continuous resonant (CR) system of the 2D cubic nonlinear Schr{\"o}dinger (NLS) equation. This system arises in numerous instances as an effective equation for the long-time dynamics of NLS in confined regimes (e.g. on a…

Analysis of PDEs · Mathematics 2016-01-20 Pierre Germain , Zaher Hani , Laurent Thomann

This article is concerned with the small data problem for the cubic nonlinear Schr\"odinger equation (NLS) in one space dimension, and short range modifications of it. We provide a new, simpler approach in order to prove that global…

Analysis of PDEs · Mathematics 2014-10-14 Mihaela Ifrim , Daniel Tataru

In this article, we study a $d$-dimensional stochastic quadratic nonlinear Schr\"{o}dinger equation (SNLS), driven by a fractional derivative (of order $-\alpha<0$) of a space-time white noise: $$\left\{ \begin{array}{l}i\partial_t u-\Delta…

Analysis of PDEs · Mathematics 2022-04-07 Nicolas Schaeffer

We construct global-in-time singular dynamics for the (renormalized) cubic fourth order nonlinear Schr\"odinger equation on the circle, having the white noise measure as an invariant measure. For this purpose, we introduce the…

Analysis of PDEs · Mathematics 2020-11-25 Tadahiro Oh , Nikolay Tzvetkov , Yuzhao Wang

We consider the nonlinear Schr\"odinger equation in three space dimensions with combined focusing cubic and defocusing quintic nonlinearity. This problem was considered previously by Killip, Oh, Pocovnicu, and Visan, who proved scattering…

Analysis of PDEs · Mathematics 2021-10-22 Rowan Killip , Jason Murphy , Monica Visan
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