共查询到20条相似文献,搜索用时 15 毫秒
1.
We consider the problem $$\left\{\begin{array}{ll}-\Delta u - g(u) = \lambda u,\\ u \in H^1(\mathbb{R}^N), \int_{\mathbb{R}^N} u^2 = 1, \lambda \in \mathbb{R},\end{array}\right.$$ in dimension N ≥ 2. Here g is a superlinear, subcritical, possibly nonhomogeneous, odd nonlinearity. We deal with the case where the associated functional is not bounded below on the L 2-unit sphere, and we show the existence of infinitely many solutions. 相似文献
2.
We study the nonlinear Schrödinger equation in \(\mathbb {R}^n\) without making any periodicity assumptions on the potential or on the nonlinear term. This prevents us from using concentration compactness methods. Our assumptions are such that the potential does not change the essential spectrum of the linear operator. This results in \([0, \infty )\) being the absolutely continuous part of the spectrum. If there are an infinite number of negative eigenvalues, they will converge to 0. In each case we obtain nontrivial solutions. We also obtain least energy solutions. 相似文献
3.
Nakao Hayashi 《manuscripta mathematica》1986,55(2):171-190
We prove the existence of global classical solutions to the initial value problem for the nonlinear Schrödinger equation, iut–u+q(|u|2)u=0 in iut - u + (|u|2)u = in (t, x)xn for 6n11. 相似文献
4.
Mo Chen 《Proceedings Mathematical Sciences》2018,128(3):39
We study the internal stabilization of the higher order nonlinear Schrödinger equation with constant coefficients. Combining multiplier techniques, a fixed point argument and nonlinear interpolation theory, we can obtain the well-posedness. Then, applying compactness arguments and a unique continuation property, we prove that the solution of the higher-order nonlinear Schrödinger equation with a damping term decays exponentially. 相似文献
5.
《Communications in Nonlinear Science & Numerical Simulation》2014,19(6):1706-1722
In this paper, we provide a simple method to generate higher order position solutions and rogue wave solutions for the derivative nonlinear Schrödinger equation. The formulae of these higher order solutions are given in terms of determinants. The dynamics and structures of solutions generated by this method are studied. 相似文献
6.
7.
We prove the existence of global classical solutions of the Cauchy-problem for nonlinear Schrödinger equations u+iAu+f(|u|2)u or u+Au+if(|u|2)u respectively. We need various growth conditions on the nonlinearity f and some restrictions on the admissible space dimension n. 相似文献
8.
Paul H. Rabinowitz 《Zeitschrift für Angewandte Mathematik und Physik (ZAMP)》1992,43(2):270-291
This paper concerns the existence of standing wave solutions of nonlinear Schrödinger equations. Making a standing wave ansatz reduces the problem to that of studying the semilinear elliptic equation:
相似文献
9.
Peter Y. H. Pang Hongyan Tang Youde Wang 《Calculus of Variations and Partial Differential Equations》2006,26(2):137-169
In this paper, we study blow-up solutions to the Cauchy problem of the inhomogeneous nonlinear Schrödinger equation $ \partial_t u = i ( f(x) \Delta u + \nabla f(x) \cdot \nabla u +k(x)|u|^2u) $ on ${\mathbb{R}}^2
10.
《Communications in Nonlinear Science & Numerical Simulation》2011,16(11):4232-4237
Based on two types of expanding Lie algebras of a Lie algebra G, three isospectral problems are designed. Under the framework of zero curvature equation, three nonlinear integrable couplings of the nonlinear Schröding equations are generated. With the help of variational identity, we get the Hamiltonian structure of one of them. Furthermore, we get the result that the hierarchy is also integrable in sense of Liouville. 相似文献
11.
We investigate the existence of localized sign-changing solutions for the semiclassical nonlinear Schrödinger equation 相似文献
$$\begin{aligned} -\epsilon ^2\Delta v+V(x)v=|v|^{p-2}v,\ v\in H^1(\mathbb {R}^N) \end{aligned}$$ 12.
We consider the Cauchy problem for a family of SchrSdinger equations with initial data in modulation spaces Mp,1^s. We develop the existence, uniqueness, blowup criterion, stability of regularity, scattering theory, and stability theory. 相似文献
13.
In this paper, we obtain a new sufficient condition on the existence of breathers for the discrete nonlinear Schrödinger equations by using critical point theory in combination with periodic approximations. The classical Ambrosetti–Rabinowitz superlinear condition is improved. 相似文献
14.
We consider the nonlinear Schrödinger equation with defocusing, smooth, nonlinearity. Below the critical Sobolev regularity, it is known that the Cauchy problem is ill-posed. We show that this is even worse, namely that there is a loss of regularity, in the spirit of the result due to G. Lebeau in the case of the wave equation. As a consequence, the Cauchy problem for energy-supercritical equations is not well-posed in the sense of Hadamard. We reduce the problem to a supercritical WKB analysis. For super-cubic, smooth nonlinearity, this analysis is new, and relies on the introduction of a modulated energy functional à la Brenier. 相似文献
15.
We prove the existence of solutions of some nonautonomous systems of nonlinear Schr?dinger equations, by means of perturbation
techniques.
The work has been supported by M.U.R.S.T. under the national project “Variational methods and nonlinear differential equations”. 相似文献
16.
17.
Jifeng Chu 《Nonlinear Analysis: Theory, Methods & Applications》2010,72(3-4):1983-1992
We study the existence of positive bound states of non-autonomous systems of nonlinear Schrödinger equations. Both the singular case and the regular case are discussed. The proof is based on a nonlinear alternative principle of Leray–Schauder. 相似文献
18.
19.
《Nonlinear Analysis: Theory, Methods & Applications》2005,61(5):839-855
In this paper, we study blow-up solutions to the Cauchy problem of the inhomogeneous nonlinear Schrödinger equationon . We present the -concentration property for general initial data and investigate the -minimality. 相似文献
20.
Thomas Bartsch 《Journal of Fixed Point Theory and Applications》2013,13(1):37-50
We consider the system ${-\Delta{u}_{j} + a(x)u_{j} = \mu_{j}u^{3}_{j} + \beta \sum_{k \neq j} u^{2}_{k}u_{j}}$ , u j > 0, j = 1, . . . , n, on a possibly unbounded domain ${\Omega \subset \mathbb{R}^{N}, N \leq 3}$ , with Dirichlet boundary conditions. The system appears in nonlinear optics and in the analysis of mixtures of Bose–Einstein condensates. We consider the self-focussing (attractive self-interaction) case ${\mu_{1}, \ldots, \mu_{n} > 0}$ and take ${\beta \in \mathbb{R}}$ as bifurcation parameter. There exists a branch of positive solutions with uj/uk being constant for all ${j, k \in \{1, \ldots, n\}}$ . The main results are concerned with the bifurcation of solutions from this branch. Using a hidden symmetry we are able to prove global bifurcation even when the linearization has even-dimensional kernel (which is always the case when n > 1 is odd). 相似文献
|