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We study the critical dissipative quasi-geostrophic equations in $\bR^2$ with arbitrary $H^1$ initial data. After showing certain decay estimate, a global well-posedness result is proved by adapting the method in [11] with a suitable…

Analysis of PDEs · Mathematics 2007-05-23 Hongjie Dong , Dapeng Du

We consider the Landau equation with Coulomb potential in the spatially homogeneous case. We show short time propagation of smallness in $L^p$ norms for $p>3/2$ and instantaneous regularization in Sobolev spaces. This yields new short time…

Analysis of PDEs · Mathematics 2024-03-27 William Golding , Maria Gualdani , Amélie Loher

We consider the relativistic Landau equation in the spatially inhomogeneous, far-from-equilibrium regime. We establish regularity estimates of all orders, implying that solutions remain smooth for as long as some zeroth-order conditional…

Analysis of PDEs · Mathematics 2025-05-20 Christopher Henderson , Stanley Snelson , Andrei Tarfulea , Maja Tasković

We consider the spatially homogeneous Landau equation of kinetic theory, and provide a differential inequality for the Wasserstein distance with quadratic cost between two solutions. We deduce some well-posedness results. The main…

Probability · Mathematics 2008-12-18 Hélène Guerin , Nicolas Fournier

We analyze nonlinear degenerate coupled PDE-PDE and PDE-ODE systems that arise, for example, in the modelling of biofilm growth. One of the equations, describing the evolution of a biomass density, exhibits degenerate and singular…

Analysis of PDEs · Mathematics 2023-04-04 Koondanibha Mitra , Stefanie Sonner

We establish the well-posedness and some quantitative stability of the spatially homogeneous Landau equation for hard potentials, using some specific Monge-Kantorovich cost, assuming only that the initial condition is a probability measure…

Analysis of PDEs · Mathematics 2021-01-27 Nicolas Fournier , Daniel Heydecker

We prove global well-posedness for low regularity data for the one dimensional quintic defocusing nonlinear Schr\"odinger equation. Precisely we show that a unique and global solution exists for initial data in the Sobolev space…

Analysis of PDEs · Mathematics 2016-08-14 Daniela De Silva , Nataša Pavlović , Gigliola Staffilani , Nikolaos Tzirakis

The existence and stability of the Landau equation (1936) in a general bounded domain with a physical boundary condition is a long-outstanding open problem. This work proves the global stability of the Landau equation with the Coulombic…

Analysis of PDEs · Mathematics 2020-03-18 Yan Guo , Hyung Ju Hwang , Jin Woo Jang , Zhimeng Ouyang

We consider the spatially inhomogeneous Landau equation with soft potentials, including the case of Coulomb interactions. First, we establish the existence of solutions for a short time, assuming the initial data is in a fourth-order…

Analysis of PDEs · Mathematics 2018-05-30 Christopher Henderson , Stanley Snelson , Andrei Tarfulea

This work deals with the Landau equation in a bounded domain with the Maxwell reflection condition on the boundary for any (possibly smoothly position dependent) accommodation coefficient and for the full range of interaction potentials,…

Analysis of PDEs · Mathematics 2024-07-15 Kleber Carrapatoso , Stéphane Mischler

We establish a priori upper bounds for solutions to the spatially inhomogeneous Landau equation in the case of moderately soft potentials, with arbitrary initial data, under the assumption that mass, energy and entropy densities stay under…

Analysis of PDEs · Mathematics 2017-01-31 Stephen Cameron , Luis Silvestre , Stanley Snelson

This paper investigates the well-posedness of the inhomogeneous Boltzmann and Landau equations in critical function spaces, a fundamental open problem in kinetic theory. We develop a new analytical framework to establish local…

Analysis of PDEs · Mathematics 2025-09-19 Ke Chen , Quoc-Hung Nguyen , Tong Yang

We study the defocusing energy-critical inhomogeneous nonlinear Schr\"odinger equation \[ i\partial_tu+\Delta u=|x|^{-b}|u|^{\frac{4-2b}{d-2}}u, \qquad (t,x)\in\R\times\R^d, \] with initial data $u_0\in\dot H_x^1(\R^d)$, where $d\ge 3$ and…

Analysis of PDEs · Mathematics 2026-04-21 Bo Yang , Lei Zhang , Bin Liu

In this paper we consider the problem: $\partial_{t} u- \Delta u=f(u),\; u(0)=u_0\in \exp L^p(\R^N),$ where $p>1$ and $f : \R\to\R$ having an exponential growth at infinity with $f(0)=0.$ We prove local well-posedness in $\exp L^p_0(\R^N)$…

Analysis of PDEs · Mathematics 2018-03-07 Mohamed Majdoub , Slim Tayachi

We establish local and global well-posedness for the Cauchy problem of a generalized Camassa-Holm equation where orders of the momentum and the nonlinearity can be arbitrarily high. More precisely, we consider the equation \begin{equation*}…

Analysis of PDEs · Mathematics 2026-03-30 Nesibe Ayhan , Nilay Duruk Mutlubas , Bao Quoc Tang

In this manuscript we consider an isotropic modification for the Landau equation with Coulomb potential in three space dimensions. Global in time existence of weak solutions for even initial data is shown by employing a time…

Analysis of PDEs · Mathematics 2017-08-08 Maria Gualdani , Nicola Zamponi

Thanks to an approach inspired from Burq-Lebeau \cite{bule}, we prove stochastic versions of Strichartz estimates for Schr\"odinger with harmonic potential. As a consequence, we show that the nonlinear Schr\"odinger equation with quadratic…

Analysis of PDEs · Mathematics 2016-01-20 Aurélien Poiret , Didier Robert , Laurent Thomann

We prove global well-posedness and scattering for solutions to the mass-critical inhomogeneous nonlinear Schr\"odinger equation $i\partial_{t}u+\Delta u=\pm |x|^{-b}|u|^{\frac{4-2b}{d}}u$ for large $L^2(\mathbb{R} ^d)$ initial data with…

Analysis of PDEs · Mathematics 2025-12-02 Xuan Liu , Changxing Miao , Jiqiang Zheng

This work deals with the large time behaviour of the spatially homogeneous Landau equation with Coulomb potential. Firstly, we obtain a bound from below of the entropy dissipation $D(f)$ by a weighted relative Fisher information of $f$ with…

Analysis of PDEs · Mathematics 2015-10-30 Kleber Carrapatoso , Laurent Desvillettes , Lingbing He

This paper establishes the global well-posedness of strong solutions to the nonhomogeneous magnetic B\'enard system with positive density at infinity in the whole space $\mathbb{R}^2$. More precisely, we obtain the global existence and…

Analysis of PDEs · Mathematics 2024-07-23 Jieqiong Liu
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