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arXiv · 1901.04054

Stress Tensor on Null Boundaries

Ghadir Jafari
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Abstract

Using the Brown-York prescription for the definition of quasilocal gravitational energy-momentum tensor on a boundary and also complete canonical structure on a null boundary which has been found recently \cite{Aghapour:2018icu}, we propose a similar stress tensor on the null boundary. Then we exploit this stress tensor to compute the quasi-local energy and angular momentum for some well-known gravitational solutions. We have found that in addition to reference spacetime method for regularizing total energy, in the case of null boundary we can add a possible counterterm so avoiding embedding difficulties.

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Ghadir Jafari. 2019-01-13. Stress Tensor on Null Boundaries. https://doi.org/10.1103/physrevd.99.104035

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