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In general relativity, the local gravitational energy is best characterised by the quasilocal mass. The small sphere limit of quasilocal mass provides us the most local notion of gravitational energy. In four dimensions, the limits were…

General Relativity and Quantum Cosmology · Physics 2019-09-27 Jinzhao Wang

Consider the definition E of quasilocal energy stemming from the Hamilton-Jacobi method as applied to the canonical form of the gravitational action. We examine E in the standard "small-sphere limit," first considered by Horowitz and…

General Relativity and Quantum Cosmology · Physics 2016-08-25 J. D. Brown , S. R. Lau , J. W. York

In this article, we study the small sphere limit of the Wang-Yau quasi-local energy defined in [18,19]. Given a point $p$ in a spacetime $N$, we consider a canonical family of surfaces approaching $p$ along its future null cone and evaluate…

Differential Geometry · Mathematics 2015-10-06 PoNing Chen , Mu-Tao Wang , Shing-Tung Yau

In [13], a new quasi-local energy is introduced for spacetimes with a non-zero cosmological constant. In this article, we study the small sphere limit of this newly defined quasi-local energy for spacetimes with a negative cosmological…

Differential Geometry · Mathematics 2018-02-06 Po-Ning Chen

The small- and large-sphere limits of the quasi-local energy recently proposed by Liu and Yau are carefully examined. It is shown that in the small-sphere limit, the non-vacuum limit of the Liu-Yau quasi-local energy approaches the expected…

General Relativity and Quantum Cosmology · Physics 2007-06-11 P. P. Yu

In this note, we compute the limit of the Wang-Yau quasi-local mass on unit spheres at spatial infinity of an asymptotically flat initial data set. Similar to the small sphere limit of the Wang-Yau quasi-local mass, we prove that the…

General Relativity and Quantum Cosmology · Physics 2019-01-23 Po-Ning Chen , Mu-Tao Wang , Ye-Kai Wang , Shing-Tung Yau

Hawking's quasi-local energy definition quantifies the energy enclosed by a spacelike 2-sphere in terms of the amount of lightbending on the sphere caused by the energy distribution inside the sphere. This paper establishes for the first…

General Relativity and Quantum Cosmology · Physics 2023-08-16 Dennis Stock , Enea Di Dio , Ruth Durrer

The specification of energy for gravitating systems has been an unsettled issue since Einstein proposed his pseudotensor. It is now understood that energy-momentum is \emph{quasi-local} (associated with a closed 2-surface). Here we consider…

General Relativity and Quantum Cosmology · Physics 2018-11-15 Chiang-Mei Chen , Jian-Liang Liu , James M. Nester

We study the limit of quasilocal mass defined in [4] and [5] for a family of spacelike 2-surfaces in spacetime. In particular, we show the limit coincides with the ADM mass at spatial infinity. The limit for coordinate spheres of a boosted…

Differential Geometry · Mathematics 2015-05-13 Mu-Tao Wang , Shing-Tung Yau

The quasilocal energy of gravitational and matter fields in a spatially bounded region is obtained by employing a Hamilton-Jacobi analysis of the action functional. First, a surface stress-energy-momentum tensor is defined by the functional…

General Relativity and Quantum Cosmology · Physics 2008-11-26 J. David Brown , James W. York

The M$\o$ller tetrad gravitational energy-momentum expression was recently evaluated for a small vacuum region using orthonormal frames adapted to Riemann normal coordinates. However the result was not proportional to the Bel-Robinson…

General Relativity and Quantum Cosmology · Physics 2008-09-24 Lau Loi So

A quasi-local mass, typically defined as an integral over a spacelike $2$-surface $\Sigma$, should encode information about the gravitational field within a finite, extended region bounded by $\Sigma$. Therefore, in attempts to quantize…

General Relativity and Quantum Cosmology · Physics 2024-07-16 Bowen Zhao , Shing-Tung Yau , Lars Andersson

The Misner-Sharp-Hernandez mass defined in general relativity and in spherical symmetry has been recognized as having a Newtonian character in previous literature. In order to better understand this aspect we relax spherical symmetry and we…

General Relativity and Quantum Cosmology · Physics 2015-10-14 Valerio Faraoni

This paper presents a calculation of the quasilocal energy of a generic FRW model of the universe. The results have the correct behavior in the small-sphere limit and vanish for the empty Milne universe. Higher order corrections are found…

General Relativity and Quantum Cosmology · Physics 2010-02-03 M. M. Afshar

Quasilocal definitions of stress-energy-momentum -- that is, in the form of boundary densities (rather than local volume densities) -- have proven generally very useful in formulating and applying conservation laws in general relativity. In…

General Relativity and Quantum Cosmology · Physics 2021-04-27 Marius Oltean , Hossein Bazrafshan Moghaddam , Richard J. Epp

The Brown-York quasi-local energy of a charged rotating black hole described by the Kerr-Newman metric and enclosed by a fixed-radius surface is computed. No further assumptions on the angular momentum or the radial coordinate in…

General Relativity and Quantum Cosmology · Physics 2020-01-01 Bjoern S. Schmekel

A recent generalization of the Hawking-Hayward quasilocal energy to scalar-tensor gravity is adapted to general spherically symmetric geometries. It is then applied to several black hole and other spherical solutions of scalar-tensor and…

General Relativity and Quantum Cosmology · Physics 2020-07-27 Andrea Giusti , Valerio Faraoni

A new generalization of the Hawking-Hayward quasilocal energy to scalar-tensor gravity is proposed without assuming symmetries, asymptotic flatness, or special spacetime metrics. The procedure followed is simple but powerful and consists of…

General Relativity and Quantum Cosmology · Physics 2016-02-10 Valerio Faraoni

A quasi-local energy for Einstein's general relativity is defined by the value of the preferred boundary term in the covariant Hamiltonian formalism. The boundary term depends upon a choice of reference and a time-like displacement vector…

General Relativity and Quantum Cosmology · Physics 2015-05-28 Jian-Liang Liu , Chiang-Mei Chen , James M Nester

It is shown that under proper conditions in an appropriate coordinate system with a suitable time slicing the Hamiltonian and the Einstein-Hilbert action including all necessary boundary terms can be written on shell in terms of the…

General Relativity and Quantum Cosmology · Physics 2023-10-13 Bjoern S. Schmekel
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