The Willmore Functional on Lagrangian Tori: Its Relation to Area and Existence of Smooth Minimizers

نویسنده

  • WILLIAM P. MINICOZZI
چکیده

In this paper we prove an existence and regularity theorem for la-grangian tori minimizing the Willmore functional in Euclidean four-space, R4 ,with the standard metric and symplectic structure. Technical difficulties arisebecause the Euler-Lagrange equation for this problem is a sixth-order nonlinearpartial differential equation. This research was motivated by a study of theseemingly unrelated Plateau problem for lagrangian tori, and in this paper weillustrate this connection. DEPARTMENT OF MATHEMATICS, STANFORD UNIVERSITY, STANFORD, CALIFORNIA 94305-2125 COURANT INSTITUTE OF MATHEMATICAL SCIENCES, 251 MERCER STREET, NEW YORK, NEWYORK 10012E-mail address: minicozzClcims.nyu.edu License or copyright restrictions may apply to redistribution; see http://www.ams.org/journal-terms-of-use

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Willmore Surfaces of R 4 and the Whitney Sphere ?

We make a contribution to the study of Willmore surfaces in four-dimensional Euclidean space R4 by making use of the identification of R4 with two-dimensional complex Euclidean space C2. We prove that the Whitney sphere is the only Willmore Lagrangian surface of genus zero in R4 and establish some existence and uniqueness results about Willmore Lagrangian tori in R4 ≡ C2. Mathematics Subject Cl...

متن کامل

Flat minimizers of the Willmore functional: Euler-Lagrange equations

Let S ⊂ R be a bounded C domain and let g denote the flat metric in R. We prove that there exist minimizers of the Willmore functional restricted to a class of isometric immersions of the Riemannian surface (S, g) into R. We derive the Euler-Lagrange equations satisfied by such constrained minimizers. Our main motivation comes from nonlinear elasticity, where this constrained Willmore functiona...

متن کامل

Minimising a relaxed Willmore functional for graphs subject to boundary conditions

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-regular graphs we show that bounds for the Willmore energy imply area and diameter bounds. We then consider the L-lower semicontinuous relaxation of the Willmore functional, which is shown to be indeed its ...

متن کامل

Generalized Weierstrass Formulae, Soliton Equations and Willmore Surfaces I. Tori of Revolution and the Mkdv Equation

A new approach is proposed for study structure and properties of the total squared mean curvature W of surfaces in R 3. It is based on the generalized Weierstrass formulae for inducing surfaces. The quantity W (Will-more functional or extrinsic Polyakov action) is shown to be invariant under the modified Novikov–Veselov hierarchy of integrable flows. It is shown that extremals of W (Willmore su...

متن کامل

The Willmore functional and other L curvature functionals in Riemannian manifolds

Using techniques both of non linear analysis and geometric measure theory, we prove existence of minimizers and more generally of critical points for the Willmore functional and other Lp curvature functionals for immersions in Riemannian manifolds. More precisely, given a 3-dimensional Riemannian manifold (M, g) and an immersion of a sphere f : S2 ↪→ (M, g) we study the following problems. 1) T...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009