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Related papers: A note on center of mass

200 papers

On a smooth asymptotically flat Riemannian manifold with non-compact boundary, we prove a positive mass theorem for metrics which are only continuous across a compact hypersurface. As an application, we obtain a positive mass theorem on…

Differential Geometry · Mathematics 2025-06-26 Sergio Almaraz , Shaodong Wang

In this paper, we will show that the limit of the Brown-York mass of a family of convex revolution surfaces in an asymptotically Schwarzschild manifold is the ADM mass.

Differential Geometry · Mathematics 2009-10-22 Xu-Qian Fan , Kwok-Kun Kwong

We show that the mass of an asymptotically hyperbolic manifold with a noncompact boundary can be evaluated via the Ricci tensor and the second fundamental form by using purely coordinates. The method is analog to Miao-Tam's approach to the…

Differential Geometry · Mathematics 2018-11-28 Xiaoxiang Chai

The notion of center of mass, which is very useful in kinematics, proves to be very handy in geometry (see [1]-[2]). Countless applications of center of mass to geometry go back to Archimedes. Unfortunately, the center of mass cannot be…

Metric Geometry · Mathematics 2024-02-14 Askold Khovanskii

We define a generalized mass for asymptotically flat manifolds using some higher order symmetric function of the curvature tensor. This mass is non-negative when the manifold is locally conformally flat and the $\sigma_k$ curvature vanishes…

General Relativity and Quantum Cosmology · Physics 2014-10-14 YanYan Li , Luc Nguyen

We define the (total) center of mass for suitably asymptotically hyperbolic time-slices of asymptotically anti-de Sitter spacetimes in general relativity. We do so in analogy to the picture that has been consolidated for the (total) center…

Differential Geometry · Mathematics 2016-05-25 Carla Cederbaum , Julien Cortier , Anna Sakovich

We study the mass of asymptotically flat $3$-manifolds with boundary using the method of Bray-Kazaras-Khuri-Stern. More precisely, we derive a mass formula on the union of an asymptotically flat manifold and fill-ins of its boundary, and…

Differential Geometry · Mathematics 2021-06-25 Sven Hirsch , Pengzi Miao , Tin-Yau Tsang

Let $(M,g)$ be a Riemannian $3$-manifold that is asymptotic to Schwarzschild. We study the existence of large area-constrained Willmore spheres $\Sigma \subset M$ with non-negative Hawking mass and inner radius $\rho$ dominated by the area…

Differential Geometry · Mathematics 2023-08-17 Michael Eichmair , Thomas Koerber , Jan Metzger , Felix Schulze

We prove a Riemannian positive mass theorem for manifolds with a single asymptotically flat end, but otherwise arbitrary other ends, which can be incomplete and contain negative scalar curvature. The incompleteness and negativity is…

Differential Geometry · Mathematics 2021-03-05 Martin Lesourd , Ryan Unger , Shing-Tung Yau

For manifolds with a distinguished asymptotically flat end, we prove a density theorem which produces harmonic asymptotics on the distinguished end, while allowing for points of incompleteness (or negative scalar curvature) away from this…

Differential Geometry · Mathematics 2022-11-14 Dan A. Lee , Martin Lesourd , Ryan Unger

In this paper, we obtain lower bounds for the Brown-York quasilocal mass and the Bartnik quasilocal mass for compact three manifolds with smooth boundaries. As a consequence, we derive sufficient conditions for the existence of horizons for…

Differential Geometry · Mathematics 2007-05-23 Yuguang Shi , Luen-Fai Tam

In contrast to the well-known and unambiguous notion of ADM mass for asymptotically Euclidean manifolds, the notion of mass for asymptotically hyperbolic manifolds admits several interpretations. Historically, there are two approaches to…

Differential Geometry · Mathematics 2025-02-04 Romain Gicquaud , Anna Sakovich

We prove positive mass theorems for asymptotically hyperbolic and asymptotically locally hyperbolic Riemannian manifolds with black-hole-type boundaries.

General Relativity and Quantum Cosmology · Physics 2021-12-08 Piotr T. Chruściel , Gregory J. Galloway

This paper investigates the volume-preserving harmonic mean curvature flow in asymptotically Schwarzschild spaces. We demonstrate the long-time existence and exponential convergence of this flow with a coordinate sphere of large radius…

Differential Geometry · Mathematics 2025-04-22 Yaoting Gui , Yuqiao Li , Jun Sun

We prove a simple, explicit formula for the mass of any asymptotically locally Euclidean (ALE) K\"ahler manifold, assuming only the sort of weak fall-off conditions required for the mass to actually be well-defined. For ALE scalar-flat…

Differential Geometry · Mathematics 2016-03-18 Hans-Joachim Hein , Claude LeBrun

We define a physically reasonable mass for an asymptotically Robertson-Walker (ARW) manifold which is uniquely defined in the case of a normalized representation.

Differential Geometry · Mathematics 2008-11-26 Claus Gerhardt

We prove the existence and uniqueness of constant mean curvature foliations for initial data sets which are asymptotically flat satisfying the Regge-Teitelboim condition near infinity. It is known that the (Hamiltonian) center of mass is…

Differential Geometry · Mathematics 2010-05-06 Lan-Hsuan Huang

We prove a positive mass theorem for spaces which asymptotically approach a flat Euclidean space times a Calabi-Yau manifold (or any special honolomy manifold except the quaternionic K\"ahler). This is motivated by the very recent work of…

Differential Geometry · Mathematics 2009-11-10 Xianzhe Dai

The Positive Mass Conjecture states that any complete asymptotically flat manifold of nonnnegative scalar curvature has nonnegative mass. Moreover, the equality case of the Positive Mass Conjecture states that in the above situation, if the…

Differential Geometry · Mathematics 2007-05-23 Dan A. Lee

Let $\mathcal{E}$ be an asymptotically Euclidean end in an otherwise arbitrary complete and connected Riemannian spin manifold $(M,g)$. We show that if $\mathcal{E}$ has negative ADM-mass, then there exists a constant $R > 0$, depending…

Differential Geometry · Mathematics 2024-07-16 Simone Cecchini , Rudolf Zeidler