Results 21 to 30 of about 1,358 (218)

Equiaffine Braneworld

open access: yesGalaxies, 2020
Higher dimensional theories, wherein our four dimensional universe is immersed into a bulk ambient, have received much attention recently, and the directions of investigation had, as far as we can discern, all followed the ordinary Euclidean hypersurface
Fan Zhang
doaj   +1 more source

A Carleman inequality on product manifolds and applications to rigidity problems

open access: yesAdvanced Nonlinear Studies, 2023
In this article, we prove a Carleman inequality on a product manifold M×RM\times {\mathbb{R}}. As applications, we prove that (1) a periodic harmonic function on R2{{\mathbb{R}}}^{2} that decays faster than all exponential rate in one direction must be ...
Sun Ao
doaj   +1 more source

$F$-stability of $f$-minimal hypersurface [PDF]

open access: yesProceedings of the American Mathematical Society, 2015
Summary: In this paper we study the classification of the \( f\)-minimal hypersurface immersed in the manifold \( M^{n}\times\mathbb R\), where \( (M^{n}, g)\) is an Einstein manifold with positive Ricci curvature. By using the \( F\) functional and \( F\)-stability which were introduced by Huisken and Colding-Minicozzi respectively, we prove that ...
Sheng, Weimin, Yu, Haobin
openaire   +2 more sources

A Note on Minimal Translation Graphs in Euclidean Space

open access: yesMathematics, 2019
In this note, we give a characterization of a class of minimal translation graphs generated by planar curves. Precisely, we prove that a hypersurface that can be written as the sum of n planar curves is either a hyperplane or a cylinder on the ...
Dan Yang, Jingjing Zhang, Yu Fu
doaj   +1 more source

Calibrated entanglement entropy

open access: yesJournal of High Energy Physics, 2017
The Ryu-Takayanagi prescription reduces the problem of calculating entanglement entropy in CFTs to the determination of minimal surfaces in a dual anti-de Sitter geometry.
I. Bakhmatov   +4 more
doaj   +1 more source

Chen’s Ricci inequalities and topological obstructions on null hypersurfaces of a Lorentzian manifold

open access: yesJournal of Inequalities and Applications, 2018
Given a null hypersurface of a Lorentzian manifold, we isometrically immerse a null hypersurface equipped with the Riemannian metric (induced on it by the rigging) into a Riemannian manifold suitably constructed on the Lorentzian manifold.
Karimumuryango Ménédore
doaj   +1 more source

A worldsheet approach to 𝒩 = 1 heterotic flux backgrounds

open access: yesJournal of High Energy Physics, 2023
Heterotic backgrounds with torsion preserving minimal supersymmetry in four dimensions can be obtained as orbifolds of principal T 2 bundles over K3. We consider a worldsheet description of these backgrounds as gauged linear sigma-models (GLSMs) with (0,
Dan Israël, Yann Proto
doaj   +1 more source

Systolic Inequalities and Minimal Hypersurfaces [PDF]

open access: yesGeometric and Functional Analysis, 2010
We give a short proof of the systolic inequality for the n-dimensional torus. The proof uses minimal hypersurfaces. It is based on the Schoen-Yau proof that an n-dimensional torus admits no metric of positive scalar curvature.
openaire   +3 more sources

Min–max minimal hypersurfaces with obstacle

open access: yesCalculus of Variations and Partial Differential Equations, 2022
We study min-max theory for area functional among hypersurfaces constrained in a smooth manifold with boundary. A Schoen-Simon-type regularity result is proved for integral varifolds which satisfy a variational inequality and restrict to a stable minimal hypersurface in the interior. Based on this, we show that for any admissible family of sweepouts $
openaire   +3 more sources

Hyperbolic Unfoldings of Minimal Hypersurfaces [PDF]

open access: yesAnalysis and Geometry in Metric Spaces, 2018
AbstractWe study the intrinsic geometry of area minimizing hypersurfaces from a new point of view by relating this subject to quasiconformal geometry. Namely, for any such hypersurface H we define and construct a so-called S-structure. This new and natural concept reveals some unexpected geometric and analytic properties of H and its singularity set Ʃ.
openaire   +4 more sources

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