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    The definition of mass in asymptotically de Sitter space-times

    Dolan, Brian P. (2019) The definition of mass in asymptotically de Sitter space-times. Classical and Quantum Gravity, 36 (7). ISSN 0264-9381

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    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 applicable when a gravitational wave within the cosmological horizon perturbs a background metric with a time-like Killing vector.

    Item Type: Article
    Keywords: general relativity; black holes; mass; symmetries;
    Academic Unit: Faculty of Science and Engineering > Theoretical Physics
    Item ID: 13886
    Depositing User: Dr. Brian Dolan
    Date Deposited: 01 Feb 2021 12:10
    Journal or Publication Title: Classical and Quantum Gravity
    Publisher: Institute of Physics
    Refereed: Yes
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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