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In this article, we describe an approach for solving partial differential equations with general boundary conditions imposed on arbitrarily shaped boundaries. A function that has a prescribed value on the domain in which a differential…

数学物理 · 物理学 2009-12-08 Hui-Chia Yu , Hsun-Yi Chen , K. Thornton

In this article, we consider the focusing cubic nonlinear Schr\"odinger equation(NLS) in the exterior domain outside of a convex obstacle in $\mathbb{R}^3$ with Dirichlet boundary conditions. We revisit the scattering result below ground…

偏微分方程分析 · 数学 2018-12-27 Chengbin Xu , Tengfei Zhao , Jiqiang Zheng

We study local and global existence and smoothing properties for the initial value problem associated to a higher order nonlinear Schr\"odinger equation with constant coefficients which appears as a model for propagation of pulse in optical…

偏微分方程分析 · 数学 2013-10-30 Mauricio Sepulveda , Octavio Vera

We consider the defocusing energy-critical nonlinear Schr\"odinger equation in the exterior of a smooth compact strictly convex obstacle in three dimensions. For the initial-value problem with Dirichlet boundary condition we prove global…

偏微分方程分析 · 数学 2012-08-27 Rowan Killip , Monica Visan , Xiaoyi Zhang

We prove smoothing estimates for Schr\"odinger equations $i\partial_t \phi+\partial_x (a(x) \partial_x \phi) =0$ with $a(x)\in \mathrm{BV}$, the space of functions with bounded total variation, real, positive and bounded from below. We then…

偏微分方程分析 · 数学 2007-05-23 N. Burq , F. Planchon

We prove some smoothing effects for the 3-D Navier-Stokes equations for initial data belonging to the critical Sobolev space $H^{1/2}(\R^3)$. Asymptotic behavior of the global solution when the time goes to infinity is studied. We also…

偏微分方程分析 · 数学 2008-07-01 Jamel Benameur

Geodesic trapping is an obstruction to dispersive estimates for solutions to the Schr\"odinger equation. Surprisingly little is known about solutions to the Schr\"odinger equation on manifolds with degenerate trapping, since the conditions…

偏微分方程分析 · 数学 2021-04-05 Hans Christianson , Derrick Nowak

We establish the Kato-type smoothing property, i.e., global-in-time smoothing estimates with homogeneous weights, for the Schr\"odinger equation on Riemannian symmetric spaces of non-compact type and general rank. These form a rich class of…

偏微分方程分析 · 数学 2023-02-09 Vishvesh Kumar , Michael Ruzhansky , Hong-Wei Zhang

We consider the homogenization of the Navier-Stokes equation, set in a channel with a rough boundary, of small amplitude and wavelength $\epsilon$. It was shown recently that, for any non-degenerate roughness pattern, and for any reasonable…

偏微分方程分析 · 数学 2010-08-31 Anne-Laure Dalibard , David Gérard-Varet

In this work we study the smoothing effect of rough differential equations driven by a fractional Brownian motion with parameter $H>1/4$. The regularization estimates we obtain generalize to the fractional Brownian motion previous results…

概率论 · 数学 2013-04-18 Fabrice Baudoin , Cheng Ouyang , Xuejing Zhang

The work treats smoothing and dispersive properties of solutions to the Schrodinger equation with magnetic potential. Under suitable smallness assumption on the potential involving scale invariant norms we prove smoothing - Strichartz…

代数拓扑 · 数学 2010-08-25 Vladimir Georgiev , Atanas Stefanov , Mirko Tarulli

We consider refinements of the local smoothing estimates for the Schr\"odinger equation in domains which are exterior to a strictly convex obstacle in $\RR^n$. By restricting the solution to small, frequency dependent collars of the…

偏微分方程分析 · 数学 2013-03-13 Matthew D Blair

In this paper, we consider the Schr\"odinger equation with a mass-supercritical focusing nonlinearity, in the exterior of a smooth, compact, convex obstacle of $\R^{d}$ with Dirichlet boundary conditions. We prove that solutions with…

偏微分方程分析 · 数学 2020-12-25 Oussama Landoulsi

In this paper we focus on the validity of some fundamental estimates for time-degenerate Schr\"{o}dinger-type operators. On one hand we derive global homogeneous smoothing estimates for operators of any order by means of suitable comparison…

偏微分方程分析 · 数学 2024-02-19 Serena Federico , Michael Ruzhansky

Absorbing boundary conditions are presented for three-dimensional time-dependent Schr\"odinger-type of equations as a means to reduce the cost of the quantum-mechanical calculations. The boundary condition is first derived from a…

数值分析 · 数学 2020-01-15 Xiaojie Wu , Xiaotao Li

We prove smoothing properties and optimal Schauder type estimates for a class of nonautonomous evolution equations driven by time dependent Ornstein-Uhlenbeck operators in a separable Hilbert space. They arise as Kolmogorov equations of…

概率论 · 数学 2021-11-11 Sandra Cerrai , Alessandra Lunardi

In this work we consider an example of a linear time-degenerate Schr\"odinger operator. We show that with the appropriate assumptions the operator satisfies a Kato smoothing effect. We also show that the solutions to the nonlinear initial…

偏微分方程分析 · 数学 2022-01-20 Serena Federico , Gigliola Staffilani

We establish Strichartz estimates for the Schr\"odinger equation on Riemannian manifolds $(\Omega,\g)$ with boundary, for both the compact case and the case that $\Omega$ is the exterior of a smooth, non-trapping obstacle in Euclidean…

偏微分方程分析 · 数学 2011-12-23 Matthew D. Blair , Hart F. Smith , Christopher D. Sogge

Following the previous work [1], we investigate the impact of damping on the oscillation of smooth solutions to some kind of quasilinear wave equations with Robin and Dirichlet boundary condition. By using generalized Riccati transformation…

偏微分方程分析 · 数学 2020-07-07 Ying Sui , Huimin Yu

In this paper a global smoothing property of Schrodinger equations is established in the critical case in dimensions two and higher. It is shown that the critical smoothing estimate is attained if the smoothing operator has some structure.…

偏微分方程分析 · 数学 2007-05-23 Michael Ruzhansky , Mitsuru Sugimoto