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We study integro-differential elliptic equations (of order $2s$) with variable coefficients, and prove the natural and most general Schauder-type estimates that can hold in this setting, both in divergence and non-divergence form.…

偏微分方程分析 · 数学 2023-08-23 Xavier Fernández-Real , Xavier Ros-Oton

We consider a time-dependent one-dimensional nonlinear Schroedinger equation with a symmetric potential double well represented by two delta interactions. Among our results we give an explicit formula for the integral kernel of the unitary…

数学物理 · 物理学 2015-05-18 Hynek Kovarik , Andrea Sacchetti

We study the dispersive behaviors of two-particles Schr\"odinger and wave equations in the Aharonov-Bohm field. In particular, we prove the Strichartz estimates for Schr\"odinger and wave equations in this setting. The key point is to…

偏微分方程分析 · 数学 2021-10-14 Xiaofen Gao , Junyong Zhang , Jiqiang Zheng

We consider the Schr\"odinger equation on a half space in any dimension with a class of nonhomogeneous boundary conditions including Dirichlet, Neuman and the so-called transparent boundary conditions. Building upon recent local in time…

偏微分方程分析 · 数学 2017-02-23 Corentin Audiard

We prove global weighted Strichartz estimates for radial solutions of linear Schr\"odinger equation on a class of rotationally symmetric noncompact manifolds, generalizing the known results on hyperbolic and Damek-Ricci spaces. This yields…

偏微分方程分析 · 数学 2007-08-19 Valeria Banica , Thomas Duyckaerts

This paper aims at proving the local boundedness and continuity of solutions of the heat equation in the context of Dirichlet spaces under some rather weak additional assumptions. We consider symmetric local regular Dirichlet forms which…

偏微分方程分析 · 数学 2020-11-16 Qi Hou , Laurent Saloff-Coste

It is well known that aspects of the formation of localised states in a one-dimensional Swift--Hohenberg equation can be described by Ginzburg--Landau-type envelope equations. This paper extends these multiple scales analyses to cases where…

斑图形成与孤子 · 物理学 2013-12-25 David Morgan , Jonathan H. P. Dawes

Let $L$ be a non-negative self-adjoint operator acting on $L^2(X)$ where $X$ is a space of homogeneous type with a dimension $n$. Suppose that the heat kernel of $L$ satisfies the Davies-Gaffney estimates of order $m\geq 2$. Let $H^1_L(X)$…

偏微分方程分析 · 数学 2021-07-13 Peng Chen , Xuan Thinh Duong , Ji Li , Lixin Yan

In this paper, we consider the higher-order linear Schr\"odinger equations, that is, a formal finite Taylor expansion of the linear pseudo-relativistic equation. We establish the global-in-time Strichartz estimates for these higher-order…

偏微分方程分析 · 数学 2022-02-24 Younghun Hong , Chulkwang Kwak , Changhun Yang

In this paper we consider the Laplace-Beltrami operator \Delta on Damek-Ricci spaces and derive pointwise estimates for the kernel of exp(\tau \Delta), when \tau \in C* with Re(\tau) \geq 0. When \tau \in iR*, we obtain in particular…

偏微分方程分析 · 数学 2010-10-12 Jean-Philippe Anker , Vittoria Pierfelice , Maria Vallarino

We consider the problem of establishing nonlinear smoothing as a general feature of nonlinear dispersive equations, i.e. the improved regularity of the integral term in Duhamel's formula, with respect to the initial data and the…

偏微分方程分析 · 数学 2023-02-08 Simão Correia , Filipe Oliveira , Jorge Drumond Silva

A nonlocal-in-time problem for the abstract Schr\"odinger equation is considered. By exploiting the linear nature of nonlocal condition we derive an exact representation of the solution operator under assumptions that the spectrum of…

数学物理 · 物理学 2018-08-31 Dmytro Sytnyk , Roderick Melnik

In this paper we obtain some new Strichartz estimates for the wave propagator $e^{it\sqrt{-\Delta}}$ in the context of Wiener amalgam spaces. While it is well understood for the Schr\"odinger case, nothing is known about the wave…

偏微分方程分析 · 数学 2021-06-07 Seongyeon Kim , Youngwoo Koh , Ihyeok Seo

We consider Schr\"odinger equation with a non-degenerate metric on the Euclidean space. We study local in time Strichartz estimates for the Schr\"odinger equation without loss of derivatives including the endpoint case. In contrast to the…

偏微分方程分析 · 数学 2017-08-08 Kouichi Taira

We prove a dispersive estimate for the evolution of Schroedinger operators H = -\Delta + V(x) in three dimensions. The potential should belong to the closure of bounded compactly-supported functions with respect to the golbal Kato norm.…

偏微分方程分析 · 数学 2016-08-31 Marius Beceanu , Michael Goldberg

We study the nonlinear Schr\"odinger equation associated with the sublaplacian L on the unit sphere $S^{2n+1}$ in $C^{n+1}$ equipped with its natural CR structure. We first prove Strichartz estimates with fractional loss of derivatives for…

偏微分方程分析 · 数学 2013-05-03 Valentina Casarino , Marco M. Peloso

This paper constructs solutions to linear and nonlinear Schr\"odinger-type equations in two and three spatial dimensions that exhibit prescribed, extraordinary gradient amplification and localization. For any finite time interval $[0,T]$,…

偏微分方程分析 · 数学 2026-04-17 Huaian Diao , Xieling Fan , Hongyu Liu

The purpose of this article is to construct global solutions, in a probabilistic sense, for the nonlinear Schr{\"o}dinger equation posed on $\mathbb{R}^d$, in a supercritical regime. Firstly, we establish Bourgain type bilinear estimates…

偏微分方程分析 · 数学 2023-04-24 Nicolas Burq , Aurélien Poiret , Laurent Thomann

We study the Cauhcy problem for space-time fractional nonlinear Schr\"odinger equation with a general nonlinearity. We prove the local well-posedness of it in fractional Sobolev spaces based on the decay estimates and H\"older type…

偏微分方程分析 · 数学 2024-07-02 Mingxuan He , Na Deng , Lu Zhang

We consider an anisotropic model case for a strictly convex domain of dimension $d\geq 2$ with smoothboundary and we describe dispersion forthe semi-classical Schr{\"o}dinger equation with Dirichlet boundary condition. More specifically, we…

偏微分方程分析 · 数学 2021-08-19 Oana Ivanovici