Conditional Stable Soliton Resolution for a Semi-linear Skyrme EquationAnnals of PDE - Tập 5 - Trang 1-59 - 2019
Andrew Lawrie, Casey Rodriguez
We study a semi-linear version of the Skyrme system due to Adkins and Nappi. The
objects in this system are maps from $$(1+3)$$-dimensional Minkowski space into
the 3-sphere and 1-forms on $$\mathbb {R}^{1+3}$$, coupled via a Lagrangian
action. Under a co-rotational symmetry reduction we establish the existence,
uniqueness, and unconditional asymptotic stability of a family of stationary
solutions... hiện toàn bộ
Emergence of Apparent Horizon in Gravitational CollapseAnnals of PDE - Tập 6 - Trang 1-89 - 2020
Xinliang An
We solve Einstein vacuum equations in a spacetime region up to the “center” of
gravitational collapse. Within this region, we construct a sequence of
marginally outer trapped surfaces (MOTS) with areas going to zero. These MOTS
form a marginally outer trapped tube (apparent horizon). It emerges from a point
and is smooth (except at that point). In the proof we employ a scale critical
trapped surfa... hiện toàn bộ
On convergence of approximate solutions to the compressible Euler systemAnnals of PDE - Tập 6 Số 2 - 2020
Eduard Feireisl, Martina Hofmanová
AbstractWe consider a sequence of approximate solutions to the compressible
Euler system admitting uniform energy bounds and/or satisfying the relevant
field equations modulo an error vanishing in the asymptotic limit. We show that
such a sequence either (i) converges strongly in the energy norm, or (ii) the
limit is not a weak solution of the associated Euler system. This is in sharp
contrast to ... hiện toàn bộ
Finite-Time Singularity Formation for Strong Solutions to the Axi-symmetric 3D Euler EquationsAnnals of PDE - Tập 5 - Trang 1-51 - 2019
Tarek M. Elgindi, In-Jee Jeong
For all $$\epsilon >0$$, we prove the existence of finite-energy strong
solutions to the axi-symmetric 3D Euler equations on the domains $$ \{(x,y,z)\in
{\mathbb {R}}^3: (1+\epsilon |z|)^2\le x^2+y^2\}$$ which become singular in
finite time. The solutions we construct have bounded vorticity before a certain
time when the vorticity becomes unbounded. We further show that solutions with 0
swirl are ... hiện toàn bộ
The Linear Stability of the Schwarzschild Solution to Gravitational Perturbations in the Generalised Wave GaugeAnnals of PDE - Tập 5 - Trang 1-92 - 2019
Thomas William Johnson
We prove in this paper that the Schwarzschild family of black holes are linearly
stable as a family of solutions to the system of equations that result from
expressing the Einstein vacuum equations in a generalised wave gauge. In
particular we improve on our recent work (Johnson in The linear stability of the
Schwarzschild solution to gravitational perturbations in the generalised wave
gauge, arXi... hiện toàn bộ
Non-local Functionals Related to the Total Variation and Connections with Image ProcessingAnnals of PDE - Tập 4 - Trang 1-77 - 2018
Haïm Brezis, Hoai-Minh Nguyen
We present new results concerning the approximation of the total variation,
$$\int _{\Omega } |\nabla u|$$ , of a function u by non-local, non-convex
functionals of the form $$\begin{aligned} \Lambda _\delta (u) = \int _{\Omega }
\int _{\Omega } \frac{\delta \varphi \big ( |u(x) - u(y)|/ \delta \big )}{|x -
y|^{d+1}} \, dx \, dy, \end{aligned}$$ as $$\delta \rightarrow 0$$ , where
$$\Omega $$ is a... hiện toàn bộ
Localized Mixing Zone for Muskat Bubbles and Turned InterfacesAnnals of PDE - Tập 8 - Trang 1-50 - 2022
Á. Castro, D. Faraco, F. Mengual
We construct mixing solutions to the incompressible porous media equation
starting from Muskat type data in the partially unstable regime. In particular,
we consider bubble and turned type interfaces with Sobolev regularity. As a
by-product, we prove the continuation of the evolution of IPM after the
Rayleigh–Taylor and smoothness breakdown exhibited in (Castro et al. in Arch
Ration Mech Anal 208(... hiện toàn bộ
Dynamic Stability for Steady Prandtl SolutionsAnnals of PDE - Tập 9 - Trang 1-33 - 2023
Yan Guo, Yue Wang, Zhifei Zhang
By establishing an invariant set (1.11) for the Prandtl equation in Crocco
transformation, we prove the orbital and asymptotic stability of Blasius-like
steady states against Oleinik’s monotone solutions.