Dolan, Brian P.
(2019)
*The definition of mass in asymptotically de Sitter space-times.*
Classical and Quantum Gravity, 36 (7).
(Preprint)

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## Abstract

An invariant definition of mass in asymptotically de-Sitter space-times is given that relies on the existence of a time-like Killing vector on a sphere surrounding the mass but does not require going to an asymptotic region. In particular the mass can be calculated exactly on a sphere inside the cosmological horizon. The formalism requires varying the background metric solution by a perturbation that satisfies the linearized equations of motion but need not share the Killing symmetry of the solution and is therefore ideally suited to calculating masses in stationary space-times perturbed by a gravitational wave without going beyond the cosmological horizon.

Item Type: | Article |
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Uncontrolled Keywords: | General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Theory (hep-th) |

Divisions: | School of Theoretical Physics |

Date Deposited: | 08 Apr 2019 15:15 |

Last Modified: | 08 Apr 2019 15:15 |

URI: | http://dair.dias.ie/id/eprint/1027 |

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