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We consider the Cauchy problem for the Chern-Simons-Dirac system on $\mathbb{R}^{1+1}$ with initial data in $H^s$. Almost optimal local well-posedness is obtained. Moreover, we show that the solution is global in time, provided that initial…

Analysis of PDEs · Mathematics 2011-10-31 Nikolaos Bournaveas , Timothy Candy , Shuji Machihara

The 1D Cauchy problem for the Dirac-Klein-Gordon system is shown to be locally well-posed for low regularity Dirac data in $\hat{H^{s,p}}$ and wave data in $\hat{H^{r,p}} \times \hat{H^{r-1,p}}$ for $1<p\le 2$ under certain assumptions on…

Analysis of PDEs · Mathematics 2007-05-23 Hartmut Pecher

Local well-posedness for the Dirac - Klein - Gordon equations is proven in one space dimension, where the Dirac part belongs to H^{-{1/4}+\epsilon} and the Klein - Gordon part to H^{{1/4}-\epsilon} for 0 < \epsilon < 1/4, and global…

Analysis of PDEs · Mathematics 2007-05-23 Hartmut Pecher

In this paper, we study the Cauchy problem of the Euler-Nernst-Planck-Possion system. We obtain global well-posedness for the system in dimension $d=2$ for any initial data in $H^{s_1}(\mathbb{R}^2)\times H^{s_2}(\mathbb{R}^2)\times…

Analysis of PDEs · Mathematics 2014-07-10 Zeng Zhang , Zhaoyang Yin

We prove global well-posedness for 3D Dirac equation with a concentrated nonlinearity.

Analysis of PDEs · Mathematics 2019-08-02 Elena Kopylova

We prove the local well posedness of the Benjamin-Ono equation and the generalized Benjamin-Ono equation in $ H^1(\T) $. This leads to a global well-posedness result in $ H^1(\T)$ for the Benjamin-Ono equation.

Analysis of PDEs · Mathematics 2007-05-23 Luc Molinet , Francis Ribaud

We show the ill-posedness of the Cauchy problem for the Dirac-Klein-Gordon system in one dimension in the critical Sobolev space. From this, we finish the classification of the regularities for which this problem is well-posed or ill-posed.

Analysis of PDEs · Mathematics 2018-08-24 Shuji Machihara , Mamoru Okamoto

In this paper, we show that the one dimensional cubic nonlinear Schr\"odinger equation is globally well posed in $L^p$ for $2\le p <13/6$. In particular, we prove that the global solution enjoys the persistence property for a twisted…

Analysis of PDEs · Mathematics 2026-03-02 Ryosuke Hyakuna

The solution of the Dirac - Klein - Gordon system in two space dimensions with Dirac data in H^s and wave data in H^{s+1/2} x H^{s-1/2} is uniquely determined in the natural solution space C^0([0,T],H^s) x C^0([0,T],H^{s+\frac1/2}),…

Analysis of PDEs · Mathematics 2011-02-16 Hartmut Pecher

In this paper, we establish a standard $L^p$-theory of solutions to one dimensional nonlinear Schr\"odinger equations with the power like nonlinearity. More precisely, we extend the following three well-known results in the $L^2$ space into…

Analysis of PDEs · Mathematics 2018-11-27 Ryosuke Hyakuna

The Cauchy problem for the Chern-Simons-Higgs system in the (2+1)-dimensional Minkowski space in temporal gauge is globally well-posed in energy space improving a result of Huh. The proof uses the bilinear space-time estimates in…

Analysis of PDEs · Mathematics 2015-02-24 Hartmut Pecher

We prove global well-posedness and scattering for the massive Dirac-Klein-Gordon system with small and low regularity initial data in dimension two. To achieve this, we impose a non-resonance condition on the masses.

Analysis of PDEs · Mathematics 2025-01-08 Ioan Bejenaru , Vitor Borges

We prove that the Cauchy problem for the Chern-Simons-Higgs equations on the (2+1)-dimensional Minkowski space-time is globally well posed for initial data with finite energy. This improves a result of Chae and Choe, who proved global…

Analysis of PDEs · Mathematics 2012-01-05 Sigmund Selberg , Achenef Tesfahun

We prove global well-posedness for the 3D Klein-Gordon equation with a concentrated nonlinearity.

Analysis of PDEs · Mathematics 2016-07-05 Elena Kopylova

We show the global well-posedness for the two-dimensional Zakharov-Kuznetsov equation in $H^{s}({\mathbb{R}^2})$ when $\frac{11}{13}<s<1$ via the I-method. Additionally, local well-posedness for the symmetrized ZK equation in $…

Analysis of PDEs · Mathematics 2018-08-16 Shan Minjie

The Maxwell-Dirac equations in one space dimension are proved to be well posed in the charge class, that is, with $L^2$ data for the spinor. We also prove that this result is sharp, in the sense that well-posedness fails for spinor data in…

Analysis of PDEs · Mathematics 2019-01-25 Sigmund Selberg , Achenef Tesfahun

Local and global well-posedness results are established for the initial value problem associated to the 1D Zakharov-Rubenchik system. We show that our results are sharp in some situations by proving Ill-posedness results otherwise. The…

Analysis of PDEs · Mathematics 2008-09-10 Felipe Linares , Carlos Matheus

We investigate the Prandtl-Shercliff model in both two and three dimensions. For the two-dimensional case, we establish global-in-time well-posedness in Sobolev spaces without any structural assumptions on the initial data. Furthermore, we…

Analysis of PDEs · Mathematics 2025-11-05 Wei-Xi Li , Zhan Xu , Anita Yang

We prove global well-posedness and scattering for the massive Dirac-Klein-Gordon system with small initial data of subcritical regularity in dimension three. To achieve this, we impose a non-resonance condition on the masses.

Analysis of PDEs · Mathematics 2018-04-12 Ioan Bejenaru , Sebastian Herr

We establish global-in-time well-posedness of the one-dimensional hydrodynamic Gross-Pitaevskii equations in the absence of vacuum in $(1 + H^s) \times H^{s-1}$ with $s \geq 1$. We achieve this by a reduction via the Madelung transform to…

Analysis of PDEs · Mathematics 2025-12-01 Robert Wegner
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