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Kuwert and Sch\"atzle showed in 2001 that the Willmore flow converges to a standard round sphere, if the initial energy is small. In this situation, we prove stability estimates for the barycenter and the quadratic moment of the surface.…

Differential Geometry · Mathematics 2021-09-28 Ernst Kuwert , Julian Scheuer

In this paper we study the blow-ups of the singular points in the boundary of a minimizing cluster lying in the interface of more than two chambers. We establish a sharp lower bound for the perimeter density at those points and we prove…

Analysis of PDEs · Mathematics 2018-01-30 Jonas Hirsch , Michele Marini

Using the reformulation in divergence form of the Euler-Lagrange equation for the Willmore functional as it was developed in "Analysis of the Willmore Functional" by T. Riviere (Invent. Math. 174), we study the limit of a local Palais-Smale…

Differential Geometry · Mathematics 2009-04-03 Yann Bernard , Tristan Riviere

The Poisson problem consists in finding an immersed surface $\Sigma\subset\mathbb{R}^m$ minimising Germain's elastic energy (known as Willmore energy in geometry) with prescribed boundary, boundary Gauss map and area which constitutes a…

Differential Geometry · Mathematics 2022-05-04 Francesca Da Lio , Francesco Palmurella , Tristan Rivière

A conformally invariant generalization of the Willmore energy for compact immersed submanifolds of even dimension in a Riemannian manifold is derived and studied. The energy arises as the coefficient of the log term in the renormalized area…

Differential Geometry · Mathematics 2017-04-13 C. Robin Graham , Nicholas Reichert

We present some geometric applications, of global character, of the bubbling analysis developed by Buzano and Sharp for closed minimal surfaces, obtaining smooth multiplicity one convergence results under upper bounds on the Morse index and…

Differential Geometry · Mathematics 2021-09-14 Lucas Ambrozio , Reto Buzano , Alessandro Carlotto , Ben Sharp

We establish the existence and smoothness of minimizers of the Willmore energy among axially symmetric surfaces of spherical type with prescribed isoperimetric ratio. Afterwards, we study the behavior of these minimizers as the…

Differential Geometry · Mathematics 2023-04-11 Jan-Henrik Metsch

In [5], Colding-Ilmanen-Minicozzi-White showed that within the class of closed smooth self-shrinkers in $\mathbb{R}^{n+1}$, the entropy is uniquely minimized at the round sphere. They conjectured that, for $2\leq n\leq 6$, the round sphere…

Differential Geometry · Mathematics 2016-06-29 Jacob Bernstein , Lu Wang

We prove a quantitative reverse isoperimetric inequality for embedded surfaces with Willmore energy bounded away from $8\pi$. We use this result to analyze the negative $L^2$ gradient flow of the Willmore energy plus a positive multiple of…

Analysis of PDEs · Mathematics 2020-09-28 Simon Blatt

In this note we consider homogeneous Willmore surfaces in $S^{n+2}$. The main result is that a homogeneous Willmore two-sphere is conformally equivalent to a homogeneous minimal two-sphere in $S^{n+2}$, i.e., either a round two-sphere or…

Differential Geometry · Mathematics 2018-05-10 Josef F. Dorfmeister , Peng Wang

We consider limits of weakly converging $W^{1,2}$-maps $\Phi_k$ from a ball $B \subset \mathbb{R}^2$ into $\mathbb{R}^3$ which are conformal immersions. Under the assumption that a normal curvature term is small, namely if for the normal…

Analysis of PDEs · Mathematics 2018-12-11 Armin Schikorra

We consider unbranched Willmore surfaces in the Euclidean space that arise as inverted complete minimal surfaces with embedded planar ends. Several statements are proven about upper and lower bounds on the Morse Index - the number of…

Differential Geometry · Mathematics 2019-05-23 Jonas Hirsch , Elena Mäder-Baumdicker

This paper proves that classical minimal surfaces of arbitrary topological type with total boundary curvature at most 4\pi must be smoothly embedded. Related results are proved for varifolds and for soap film surfaces.

Differential Geometry · Mathematics 2007-05-23 Tobias Ekholm , Brian White , Daniel Wienholtz

Bryant \cite{Bryant84} classified all Willmore spheres in $3$-space to be given by minimal surfaces in $\mathbb R^3$ with embedded planar ends. This note provides new explicit formulas for genus 0 minimal surfaces in $\mathbb R^3$ with…

Differential Geometry · Mathematics 2020-03-17 Sebastian Heller

We show that the concept of $H^2$-gradient flow for the Willmore energy and other functionals that depend at most quadratically on the second fundamental form is well-defined in the space of immersions of Sobolev class $W^{2,p}$ from a…

Numerical Analysis · Mathematics 2017-03-21 Henrik Schumacher

A new functional for simplicial surfaces is suggested. It is invariant with respect to Moebius transformations and is a discrete analogue of the Willmore functional. Minima of this functional are investigated. as an application a bending…

Differential Geometry · Mathematics 2017-08-25 Alexander I. Bobenko

Consider the energy per particle on the lattice given by $\min_{ \Lambda }\sum_{ \mathbb{P}\in \Lambda} \left|\mathbb{P}\right|^4 e^{-\pi \alpha \left|\mathbb{P}\right|^2 }$, where $\alpha >0$ and $\Lambda$ is a two dimensional lattice. We…

Analysis of PDEs · Mathematics 2024-11-27 Kaixin Deng , Senping Luo

The positioning of a bubble inside a many fermion system does not affect the volume, surface or curvature terms in the liquid drop expansion of the total energy. Besides possible Coulomb effects, the only other contribution to the ground…

Nuclear Theory · Physics 2009-10-31 Yongle Yu , Aurel Bulgac , Piotr Magierski

For a bounded smooth domain in the plane and smooth boundary data we consider the minimisation of the Willmore functional for graphs subject to Dirichlet or Navier boundary conditions. For $H^2$-regular graphs we show that bounds for the…

Analysis of PDEs · Mathematics 2015-03-05 Klaus Deckelnick , Hans-Christoph Grunau , Matthias Röger

We consider a variational model of electrified liquid drops, involving competition between surface tension and charge repulsion. Since the natural model happens to be ill-posed, we show that by adding to the perimeter a Willmore-type…

Analysis of PDEs · Mathematics 2024-09-18 Michael Goldman , Matteo Novaga , Berardo Ruffini
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