Results 131 to 140 of about 359,520 (242)

Gap solitons in periodic Schrodinger lattice system with nonlinear hopping

open access: yesElectronic Journal of Differential Equations, 2016
This article concerns the periodic discrete Schrodinger equation with nonlinear hopping on the infinite integer lattice. We obtain the existence of gap solitons by the linking theorem and concentration compactness method together with a periodic ...
Ming Cheng, Alexander Pankov
doaj  

Nonlinear damped Schrodinger equation in two space dimensions

open access: yesElectronic Journal of Differential Equations, 2015
In this article, we study the initial value problem for a semi-linear damped Schrodinger equation with exponential growth nonlinearity in two space dimensions. We show global well-posedness and exponential decay.
Tarek Saanouni
doaj  

Global well-posedness for Schrodinger equations with derivative in a nonlinear term and data in low-order Sobolev spaces

open access: yesElectronic Journal of Differential Equations, 2001
In this paper, we study the existence of global solutions to Schrodinger equations in one space dimension with a derivative in a nonlinear term. For the Cauchy problem we assume that the data belongs to a Sobolev space weaker than the finite energy space
Hideo Takaoka
doaj  

On the rigidity of minimal mass solutions to the focusing mass-critical NLS for rough initial data

open access: yesElectronic Journal of Differential Equations, 2009
For the focusing mass-critical nonlinear Schrodinger equation $iu_t+Delta u=-|u|^{4/d}u$, an important problem is to establish Liouville type results for solutions with ground state mass.
Dong Li, Xiaoyi Zhang
doaj  

Asymptotic behavior for a quadratic nonlinear Schrodinger equation

open access: yesElectronic Journal of Differential Equations, 2008
We study the initial-value problem for the quadratic nonlinear Schrodinger equation $$displaylines{ iu_{t}+frac{1}{2}u_{xx}=partial _{x}overline{u}^{2},quad xin mathbb{R},; t>1, cr u(1,x)=u_{1}(x),quad xin mathbb{R}. }$$ For small initial data $u_{
Pavel I. Naumkin, Nakao Hayashi
doaj  

Global well-posedness for the radial defocusing cubic wave equation on $R^3$ and for rough data

open access: yesElectronic Journal of Differential Equations, 2007
We prove global well-posedness for the radial defocusing cubic wave equation $$displaylines{ partial_{tt} u - Delta u = -u^{3} cr u(0,x) = u_{0}(x) cr partial_{t} u(0,x) = u_{1}(x) }$$ with data $(u_0, u_1) in H^{s} imes H^{s-1}$, $1 > s
Tristan Roy
doaj  

On multi-lump solutions to the non-linear Schrodinger equation

open access: yesElectronic Journal of Differential Equations, 1998
We present a new approach to proving the existence of semi-classical bound states of the non-linear Schrodinger equation which are concentrated near a finite set of non-degenerate critical points of the potential function.
Robert Magnus
doaj  

Heisenberg ferromagnetism as an evolution of a spherical indicatrix: localized solutions and elliptic dispersionless reduction

open access: yesElectronic Journal of Differential Equations, 2018
A geometrical formulation of Heisenberg ferromagnetism as an evolution of a curve on the unit sphere in terms of intrinsic variables is provided and investigated.
Francesco Demontis   +2 more
doaj  

On the Schrodinger equations with isotropic and anisotropic fourth-order dispersion

open access: yesElectronic Journal of Differential Equations, 2016
This article concerns the Cauchy problem associated with the nonlinear fourth-order Schrodinger equation with isotropic and anisotropic mixed dispersion.
Elder J. Villamizar-Roa, Carlos Banquet
doaj  

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