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Let U be a bounded, regular, strictly convex domain of R^2 and consider the wave equation on U with Dirichlet boundary condition. We prove that in such a domain the Strichartz estimates for the wave equation suffer losses when compared to…

Analysis of PDEs · Mathematics 2009-04-30 Oana Ivanovici

We prove that the range of Strichartz estimates on a model 2D convex domain may be further restricted compared to the known counterexamples due to the first author. Our new family of counterexamples is now built on the parametrix…

Analysis of PDEs · Mathematics 2021-06-14 Oana Ivanovici , Gilles Lebeau , Fabrice Planchon

We prove better Strichartz type estimates than expected from the (optimal) dispersion we obtained in our earlier work on a 2d convex model. This follows from taking full advantage of the space-time localization of caustics in the parametrix…

Analysis of PDEs · Mathematics 2021-08-23 Oana Ivanovici , Gilles Lebeau , Fabrice Planchon

We prove localized energy estimates for the wave equation in domains with a strictly concave boundary when homogeneous Dirichlet or Neumann conditions are imposed. By restricting the solution to small, frequency dependent, space time…

Analysis of PDEs · Mathematics 2014-11-07 Matthew D. Blair

We prove certain mixed-norm Strichartz estimates on manifolds with boundary. Using them we are able to prove new results for the critical and subcritical wave equation in 4-dimensions with Dirichlet or Neumann boundary conditions. We obtain…

Analysis of PDEs · Mathematics 2015-05-13 Matthew D. Blair , Hart F. Smith , Christopher D. Sogge

The problem of boundary behaviour at the origin of coordinates is discussed for D-dimensional Schrodinger equation in the framework of hyper spherical formalism, which have been often considered last time. We show that the Dirichlet…

Quantum Physics · Physics 2022-06-02 Anzor Khelashvili , Teimuraz Nadareishvili

The work is devoted to Dirichlet problem for sub-quintic semi-linear wave equation with damping damping term of the form $(-\Delta)^\alpha\partial_t u$, $\alpha\in(0,\frac{1}{2})$, in bounded smooth domains of $\Bbb R^3$. It appears that to…

Analysis of PDEs · Mathematics 2014-03-31 Anton Savostianov

We study second-order stochastic parabolic equations in a cylindrical domain with homogeneous Dirichlet boundary conditions. Under a natural compatibility condition on the gradient-type noise, we establish global Schauder estimates in…

Probability · Mathematics 2026-05-19 Kai Du

In this article we shall go over recent work in proving dispersive and Strichartz estimates for the Dirichlet-wave equation. We shall discuss applications to existence questions outside of obstacles and discuss open problems.

Analysis of PDEs · Mathematics 2007-05-23 Christopher D. Sogge

We prove resolvent estimates for a Schr\"odinger operator with a short-range potential outside an obstacle with Dirichlet boundary conditions. As a consequence, we deduce integrability of the local energy for the wave equation, and…

Analysis of PDEs · Mathematics 2024-11-25 Thomas Duyckaerts , Jianwei Urban Yang

The weak well-posedness results of the strongly damped linear wave equation and of the non linear Westervelt equation with homogeneous Dirichlet boundary conditions are proved on arbitrary three dimensional domains or any two dimensional…

Analysis of PDEs · Mathematics 2020-04-13 Adrien Dekkers , Anna Rozanova-Pierrat

We consider the wave equation in a smooth domain subject to Dirichlet boundary conditions on one part of the boundary and dissipative boundary conditions of memory-delay type on the remainder part of the boundary, where a general borelian…

Optimization and Control · Mathematics 2016-04-05 Pierre Cornilleau , Serge Nicaise

We study the well-posedness of the Cauchy problem with Dirichlet or Neumann boundary conditions associated to an H 1 -critical semilinear wave equation on a smooth bounded 2D domain {\Omega}. First, we prove an appropriate Strichartz type…

Analysis of PDEs · Mathematics 2010-08-17 S. Ibrahim , R. Jrad

We consider the wave equation with Dirichlet boundary conditions in the exterior of the unit ball $B_{d}(0,1)$ of $\mathbb{R}^d$. For $d=3$, we obtain a global in time parametrix and derive sharp dispersive estimates, matching the…

Analysis of PDEs · Mathematics 2024-12-10 Oana Ivanovici

Using a new local smoothing estimate of the first and third authors, we prove local-in-time Strichartz and smoothing estimates without a loss exterior to a large class of polygonal obstacles with arbitrary boundary conditions and…

Analysis of PDEs · Mathematics 2013-04-22 Dean Baskin , Jeremy L. Marzuola , Jared Wunsch

We prove Strichartz estimates for gravity water waves, in arbitrary dimension and in fluid domains with general bottoms. We consider rough solutions such that, initially, the first order derivatives of the velocity field are not controlled…

Analysis of PDEs · Mathematics 2013-08-08 Thomas Alazard , Nicolas Burq , Claude Zuily

A system of boundary-domain integral equations is derived from the bidimensional Dirichlet problem for the diffusion equation with variable coefficient using the novel parametrix from [22] different from the one in [5,18]. Mapping…

Analysis of PDEs · Mathematics 2020-11-23 C. F. Portillo , Z. W. Woldemicheal

We consider the Cauchy-Dirichlet problem for semilinear wave equations in a three space dimensional domain exterior to a bounded and non-trapping obstacle. We obtain a detailed estimate for the lower bound of the lifespan of classical…

Analysis of PDEs · Mathematics 2010-09-08 Soichiro Katayama , Hideo Kubo

We consider the wave equation on a manifold $(\Omega,g)$ of dimension $d\geq 2$ with smooth strictly convex boundary $\partial\Omega\neq\emptyset$, with Dirichlet boundary conditions. We construct a sharp local in time parametrix and then…

Analysis of PDEs · Mathematics 2023-04-10 Oana Ivanovici , Richard Lascar , Gilles Lebeau , Fabrice Planchon

This paper is devoted to the proof of a well-posedness result for the gravity water waves equations, in arbitrary dimension and in fluid domains with general bottoms, when the initial velocity field is not necessarily Lipschitz. Moreover,…

Analysis of PDEs · Mathematics 2014-04-17 Thomas Alazard , Nicolas Burq , Claude Zuily
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