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We study the generalized Hartree equation, which is a nonlinear Schr\"odinger-type equation with a nonlocal potential $iu_t + \Delta u + (|x|^{-b} \ast |u|^p)|u|^{p-2}u=0, x \in \mathbb{R}^N$.We establish the local well-posedness at the…

偏微分方程分析 · 数学 2019-10-03 Anudeep K. Arora , Svetlana Roudenko

We consider the stationary problem for the quasi-geostrophic equation on the whole plane and investigate its well-posedness and ill-posedness. In[Fujii, Ann. PDE 10, 10 (2024)], it was shown that the two-dimensional stationary…

偏微分方程分析 · 数学 2025-03-17 Mikihiro Fujii , Tsukasa Iwabuchi

The work is devoted to establishing the global well-posedness in $W^{(1,2),2}(R\times R^{+})$ of the integro-differential problem involving the two nonlocal terms describing the diffusion and the production in the biological system in the…

偏微分方程分析 · 数学 2026-02-10 Messoud Efendiev , Vitali Vougalter

We study the defocusing stochastic generalized Korteweg-de Vries equations (sgKdV) driven by additive noise, with a focus on mass-critical and supercritical nonlinearities. For integers $k \geq 4$, we establish local well-posedness almost…

偏微分方程分析 · 数学 2025-11-11 Engin Başakoğlu , Faruk Temur , Oğuz Yılmaz

We study initial value problem of the $(1+4)$-dimensional Maxwell-Klein-Gordon system (MKG) in the Lorenz gauge. Since (MKG) in the Lorenz gauge does not possess an obvious null structure, it is not easy to handle the nonlinearity. To…

偏微分方程分析 · 数学 2021-06-22 Seokchang Hong

The well-posedness and regularity properties of diffusion-aggregation equations, emerging from interacting particle systems, are established on the whole space for bounded interaction force kernels by utilizing a compactness convergence…

偏微分方程分析 · 数学 2024-06-19 Li Chen , Paul Nikolaev , David J. Prömel

This paper is devoted to global well-posedness, self-similarity and symmetries of solutions for a superdiffusive heat equation with superlinear and gradient nonlinear terms with initial data in new homogeneous Besov-Morrey type spaces.…

偏微分方程分析 · 数学 2016-05-06 Marcelo Fernandes de Almeida , Arlúcio da Cruz Viana

We prove unconditional local well-posedness in a space of quasi-periodic functions for dispersive equations of the form $$\partial_tu + Lu + \partial_x(u^{p+1})=0,$$ where $L$ is a multiplier operator with purely imaginary symbol which…

偏微分方程分析 · 数学 2024-02-23 Hagen Papenburg

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…

偏微分方程分析 · 数学 2026-04-21 Bo Yang , Lei Zhang , Bin Liu

Exploiting a fluid dynamic formulation for which a probabilistic counterpart might not be available, we extend the theory of Schroedinger bridges to the case of inertial particles with losses and general, possibly singular diffusion…

数学物理 · 物理学 2014-10-08 Yongxin Chen , Tryphon T. Georgiou , Michele Pavon

We prove local well-posedness for the periodic derivative nonlinear Schrodinger's equation, which is L^2 critical, in Fourier-Lebesgue spaces which scale like H^s(T) for s>0. In particular we close the existing gap in the subcritical theory…

偏微分方程分析 · 数学 2020-12-02 Yu Deng , Andrea R. Nahmod , Haitian Yue

We establish the well/ill-posedness theories for the inviscid $\alpha$-surface quasi-geostrophic ($\alpha$-SQG) equations in H\"older spaces, where $\alpha = 0$ and $\alpha = 1$ correspond to the two-dimensional Euler equation in the…

偏微分方程分析 · 数学 2024-05-03 Young-Pil Choi , Jinwook Jung , Junha Kim

The semi-geostrophic equations are used widely in the modelling of large-scale atmospheric flows. In this note, we prove the global existence of weak solutions of the incompressible semi-geostrophic equations, in geostrophic coordinates, in…

偏微分方程分析 · 数学 2018-11-12 Mike J. P. Cullen , Tobias Kuna , Beatrice Pelloni , Mark Wilkinson

The paper is devoted to the study of slightly supercritical active scalars with nonlocal diffusion. We prove global regularity for the surface quasi-geostrophic (SQG) and Burgers equations, when the diffusion term is supercritical by a…

偏微分方程分析 · 数学 2016-01-20 Michael Dabkowski , Alexander Kiselev , Luis Silvestre , Vlad Vicol

We consider the following $p$ order nonlinear half wave Schr{\"o}dinger equations$$\left(i \partial\_{t}+\partial\_{x }^2-\left|D\_{y}\right|\right) u=\pm|u|^{p-1} u$$on the plane $\mathbb{R}^2$ with $1<p\leq 2$. This equation is considered…

偏微分方程分析 · 数学 2023-07-21 Xi Chen

We study the Abels-Garcke-Gr\"un (AGG) model for a mixture of two viscous incompressible fluids with different densities. The AGG model consists of a Navier-Stokes-Cahn-Hilliard system characterized by a (non-constant)…

偏微分方程分析 · 数学 2020-06-24 Andrea Giorgini

We study well-posedness and long-time behaviour of aggregation-diffusion equations of the form $\frac{\partial \rho}{\partial t} = \Delta \rho^m + \nabla \cdot( \rho (\nabla V + \nabla W \ast \rho))$ in the fast-diffusion range, $0<m<1$,…

偏微分方程分析 · 数学 2023-04-11 José A. Carrillo , A. Fernández-Jiménez , D. Gómez-Castro

We consider the Hartree equation for infinitely many electrons with a constant external magnetic field. For the system, we show a local well-posedness result when the initial data is the pertubation of a Fermi sea, which is a non-trace…

数学物理 · 物理学 2020-03-17 Xin Dong

We show that any non-linear heat equation with scaling critical dimension $-1$ is locally well-posed when its initial condition is taken as the Gaussian free field in fractional dimension $d < 4$. Our results in particular extend the…

概率论 · 数学 2025-08-22 Ilya Chevyrev , Hora Mirsajjadi

This work's major intention is the investigation of the well-posedness of certain cross-diffusion equations in the class of bounded functions. More precisely, we show existence, uniqueness and stability of bounded weak solutions under the…

偏微分方程分析 · 数学 2020-11-19 Christian Seis , Dominik Winkler