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We prove small energy scattering for the 3D Zakharov system with radial symmetry. The main ingredients are normal form reduction and the radial-improved Strichartz estimates.

Analysis of PDEs · Mathematics 2013-01-24 Zihua Guo , Kenji Nakanishi

We prove small energy scattering for the 3D Klein-Gordon-Zakharov system with radial symmetry. The idea of proof is the same as the Zakharov system studied in \cite{GN}, namely to combine the normal form reduction and the radial-improved…

Analysis of PDEs · Mathematics 2012-08-09 Zihua Guo , Kenji Nakanishi , Shuxia Wang

We obtain scattering for the 3D Zakharov system with non-radial small data in the energy space with angular regularity of degree one. The main ingredient is a generalized Strichartz estimate for the Schr\"odinger equation in the space of…

Analysis of PDEs · Mathematics 2015-06-15 Zihua Guo , Sanghyuk Lee , Kenji Nakanishi , Chengbo Wang

We study the Cauchy problem for the 3D Gross-Pitaevskii equation. The global well-posedness in the natural energy space was proved by G\'erard \cite{Gerard}. In this paper we prove scattering for small data in the same space with some…

Analysis of PDEs · Mathematics 2018-01-17 Zihua Guo , Zaher Hani , Kenji Nakanishi

We prove generalized Strichartz estimates with weaker angular integrability for the Schr\"odinger equation. Our estimates are sharp except some endpoints. Then we apply these new estimates to prove the scattering for the 3D Zakharov system…

Analysis of PDEs · Mathematics 2014-06-11 Zihua Guo

We prove global existence and scattering for small localized solutions of the Cauchy problem for the Zakharov system in 3 space dimensions. The wave component is shown to decay pointwise at the optimal rate of t^{-1}, whereas the…

Analysis of PDEs · Mathematics 2015-06-05 Zaher Hani , Fabio Pusateri , Jalal Shatah

We consider the Zakharov system in the energy critical dimension $d=4$ with energy below the ground state. It is known that below the ground state solutions exist globally in time, and scatter in the radial case. Scattering below the ground…

Analysis of PDEs · Mathematics 2022-05-25 Timothy Candy

We consider the global existence and scattering for solutions of magnetic Zakharov system in three-dimensional space. When the initial data is small, we prove the existence of smooth global solutions and scattering results, by combining the…

Analysis of PDEs · Mathematics 2024-02-19 Xiaohong Wang , Lijia Han

The Cauchy problem for the Zakharov system in four dimensions is considered. Some new well-posedness results are obtained. For small initial data, global well-posedness and scattering results are proved, including the case of initial data…

Analysis of PDEs · Mathematics 2015-12-25 Ioan Bejenaru , Zihua Guo , Sebastian Herr , Kenji Nakanishi

This paper is a continuation of our previous study arXiv:2507.01288 on the scattering problem for the Zakharov-Kuznetsov equation (ZK). When the space dimension is three, we construct a global solution to (ZK) which scatters to a given free…

Analysis of PDEs · Mathematics 2026-03-25 Jun-ichi Segata

We prove dynamical dichotomy into scattering and blow-up (in a weak sense) for all radial solutions of the Zakharov system in the energy space of four spatial dimensions that have less energy than the ground state, which is written using…

Analysis of PDEs · Mathematics 2018-10-16 Zihua Guo , Kenji Nakanishi

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…

Analysis of PDEs · Mathematics 2021-10-22 Nicolas Camps

We consider the final-state problem for the Zakharov system in the energy space in three space dimensions. For $(u_+, v_+) \in H^1 \times L^2$ without any size restriction, symmetry assumption or additional angular regularity, we perform a…

Analysis of PDEs · Mathematics 2021-02-09 Martin Spitz

The topic of this paper is a semi-linear, energy sub-critical, defocusing wave equation $\partial_t^2 u - \Delta u = - |u|^{p -1} u$ in the 3-dimensional space ($3\leq p<5$) whose initial data are radial and come with a finite energy. We…

Analysis of PDEs · Mathematics 2019-08-27 Ruipeng Shen

We study the theory of scattering for the Zakharov system in space dimension 3. We prove in particular the existence of wave operators for that system with no size restriction on the data in larger spaces and for more general asymptotic…

Analysis of PDEs · Mathematics 2007-05-23 J. Ginibre , G. Velo

We study the scattering problems for the quadratic Klein-Gordon equations with radial initial data in the energy space. For 3D, we prove small data scattering, and for 4D, we prove large data scattering with mass below the ground state.

Analysis of PDEs · Mathematics 2020-04-09 Zihua Guo , Jia Shen

We study global behavior of small solutions of the Gross-Pitaevskii equation in three dimensions. We prove that disturbances from the constant equilibrium with small, localized energy, disperse for large time, according to the linearized…

Analysis of PDEs · Mathematics 2008-03-24 S. Gustafson , K. Nakanishi , T. -P. Tsai

This work is devoted to the stochastic Zakharov system in dimension four, which is the energy-critical dimension. First, we prove local well-posedness in the energy space $H^1\times L^2$ up to the maximal existence time and a blow-up…

Analysis of PDEs · Mathematics 2024-10-08 Sebastian Herr , Michael Röckner , Martin Spitz , Deng Zhang

In this paper, we consider the wave equation in space dimension 3 with an energy-supercritical, focusing nonlinearity. We show that any radial solution of the equation which is bounded in the critical Sobolev space is globally defined and…

Analysis of PDEs · Mathematics 2012-08-13 Thomas Duyckaerts , Carlos Kenig , Frank Merle

This manuscript proves the energy scattering of global solutions to a repulsive fourth-order generalized Hartree equation with non-radial data in the inter-critical regime. This work uses a new approach due to Dodson-Murphy [4] and extends…

Analysis of PDEs · Mathematics 2021-09-20 Tarek Saanouni , Hanene Hezzi
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