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This paper introduces fractional type evolutionary equations modeling the interaction between short waves and long waves. We consider a fractional Benney type system, which is given by a fractional Schr\"odinger equation coupled with a…

偏微分方程分析 · 数学 2022-06-14 Wladimir Neves , Dionicio Orlando

In this paper, we consider solutions to the following nonlinear Schr\"odinger equation with competing Hartree-type nonlinearities, $$ -\Delta u + \lambda u=\left(|x|^{-\gamma_1} \ast |u|^2\right) u - \left(|x|^{-\gamma_2} \ast |u|^2\right)…

偏微分方程分析 · 数学 2024-11-05 Divyang Bhimani , Tianxiang Gou , Hichem Hajaiej

The purpose of this paper is to illustrate the I-method by studying low-regularity solutions of the nonlinear Schr\'[o]dinger equation in two space dimensions. By applying this method, together with the interaction Morawetz estimate, (see…

偏微分方程分析 · 数学 2015-12-09 Changxing Miao , Jiqiang Zheng

This is the second part of a two-paper series studying the nonlinear Schr\"odinger equation with quasi-periodic initial data. In this paper, we focus on the quasi-periodic Cauchy problem for the derivative nonlinear Schr\"odinger equation.…

偏微分方程分析 · 数学 2025-12-23 David Damanik , Yong Li , Fei Xu

We study 1D NLS with non-gauge invariant quadratic nonlinearity on the torus. The Cauchy problem admits trivial global solutions which are constant with respect to space. The non-existence of global solutions also has been studied only by…

偏微分方程分析 · 数学 2024-06-19 Kazumasa Fujiwara , Vladimir Georgiev

The Cauchy problem for the classical Dirac-Klein-Gordon system in two space dimensions is globally well-posed for L^2 Schoedinger data and wave data in H^{1/2} \times H^{-1/2}. In the case of smooth data there exists a global smooth…

偏微分方程分析 · 数学 2009-06-22 Axel Gruenrock , Hartmut Pecher

We obtain almost-sure scattering for the cubic defocusing Schr{\"o}dinger equation in the Euclidean space {$\mathbb{R}^3$}, with randomized radially-symmetric initial data at some supercritical regularity scales. Since we make no smallness…

偏微分方程分析 · 数学 2021-10-22 Nicolas Camps

This paper considers the question of global in time existence and asymptotic behavior of small-data solutions of nonlinear dispersive equations with a real potential $V$. The main concern is treating nonlinearities whose degree is low…

偏微分方程分析 · 数学 2013-03-19 Pierre Germain , Zaher Hani , Samuel Walsh

We prove the global existence of solution to the small data mass critical stochastic nonlinear Schr\"{o}dinger equation in $d=1$. We further show the stability of the solution under perturbation of initial data. Our construction starts with…

概率论 · 数学 2018-08-27 Chenjie Fan , Weijun Xu

We establish global well-posedness and scattering for solutions to the mass-critical nonlinear Schr\"odinger equation $iu_t + \Delta u = \pm |u|^2 u$ for large spherically symmetric L^2_x(\R^2) initial data; in the focusing case we require,…

偏微分方程分析 · 数学 2008-03-04 Rowan Killip , Terence Tao , Monica Visan

We study the energy-critical nonlinear Schr\"{o}dinger equation with randomised initial data in dimensions $d>6$. We prove that the Cauchy problem is almost surely globally well-posed with scattering for randomised super-critical initial…

偏微分方程分析 · 数学 2023-10-03 Katie Marsden

We study the Cauchy problem for the Gross-Pitaevskii equation with a nonlocal interaction potential of Hartree type in three space dimensions. If the potential is even and positive definite or a positive function and its Fourier transform…

偏微分方程分析 · 数学 2012-10-08 Hartmut Pecher

We consider the nonlinear Schr\"odinger equation with periodic dispersion management. We first establish global-in-time Strichartz estimates for the underlying linear equation with suitable dispersion maps. As an application, we establish a…

偏微分方程分析 · 数学 2023-05-11 Jason Murphy , Tim Van Hoose

We study the Cauchy problem for fractional Schr\"odinger equation with cubic convolution nonlinearity ($i\partial_t u - (-\Delta)^{\frac{\alpha}{2}}u\pm (K\ast |u|^2) u =0$) with Cauchy data in the modulation spaces $M^{p,q}(\mathbb…

偏微分方程分析 · 数学 2018-10-10 Divyang G. Bhimani

We consider the Cauchy problem for the nonlinear Schr\"odinger equation with double nonlinearities with opposite sign, with one term is mass-critical and the other term is mass-supercritical and energy-subcritical, which includes the famous…

偏微分方程分析 · 数学 2019-04-29 Xing Cheng

Scattering for the mass-critical fractional Schr\"odinger equation with a cubic Hartree-type nonlinearity for initial data in a small ball in the scale-invariant space of three-dimensional radial and square-integrable initial data is…

偏微分方程分析 · 数学 2019-01-29 Sebastian Herr , Changhun Yang

We study the Cauchy problem for the non-linear Schr\"odinger equation with singular potentials. For point-mass potential and nonperiodic case, we prove existence and asymptotic stability of global solutions in weak-L^{p} spaces. Specific…

偏微分方程分析 · 数学 2013-07-29 Jaime Angulo Pava , Lucas C. F. Ferreira

The purpose of this article is to construct global solutions, in a probabilistic sense, for the nonlinear Schr{\"o}dinger equation posed on $\mathbb{R}^d$, in a supercritical regime. Firstly, we establish Bourgain type bilinear estimates…

偏微分方程分析 · 数学 2023-04-24 Nicolas Burq , Aurélien Poiret , Laurent Thomann

We consider the numerical approximation of a system of partial differential equations involving a nonlinear Schr\"odinger equation coupled with a hyperbolic conservation law. This system arises in models for the interaction of short and…

数值分析 · 数学 2012-02-07 Paulo Amorim , Mário Figueira

In this paper we study a mixed problem for the nonlinear Schr\"odinger equation globally that have a nonlinear adding, in which the coefficient is a generalized function. Here is proved a global solvability theorem of the considered problem…

数学物理 · 物理学 2012-11-16 Kamal N. Soltanov