Quasi-local mass at null infinity in Bondi-Sachs coordinates
General Relativity and Quantum Cosmology
2019-01-23 v1 Mathematical Physics
Differential Geometry
math.MP
Abstract
There are two important statements regarding the Trautman-Bondi mass at null infinity: one is the positivity, and the other is the Bondi mass loss formula, which are both global in nature. In this note, we compute the limit of the Wang-Yau quasi-local mass on unit spheres at null infinity of an asymptotically flat spacetime in the Bondi-Sachs coordinates. The quasi-local mass leads to a local description of the radiation that is purely gravitational at null infinity. In particular, the quasi-local mass is evaluated in terms of the news function of the Bondi-Sachs coordinates.
Cite
@article{arxiv.1901.06952,
title = {Quasi-local mass at null infinity in Bondi-Sachs coordinates},
author = {Po-Ning Chen and Mu-Tao Wang and Ye-Kai Wang and Shing-Tung Yau},
journal= {arXiv preprint arXiv:1901.06952},
year = {2019}
}
Comments
11 pages