Vernon, IR and Jennings, D orcid.org/0000-0003-1201-3725 (2005) Graviton emission into non-Z2 symmetric brane world spacetimes. Journal of Cosmology and Astroparticle Physics, 2005 (07). 011. ISSN 1475-7516
Abstract
The equations for the evolution of a homogeneous brane world that emits gravitons at early times, and into a non-Z2 symmetric bulk, are derived using an AdS–Vaidya spacetime approximation. The behaviour of the black hole mass parameters either side of the brane is analysed, and it is found that in general graviton emission leads to a decrease in the non-Z2 symmetry. However, the behaviour of the dark radiation term in the Friedmann equation is more complex: it is shown that this term can increase or decrease due to the non-Z2 symmetry, and can become negative in some cases, leading to H = 0 and the brane universe collapsing. Constraints on the initial (non-zero) sizes of the mass parameters are therefore derived.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Theoretical Physics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 19 Sep 2019 15:08 |
Last Modified: | 19 Sep 2019 15:08 |
Status: | Published |
Publisher: | IOP Publishing |
Identification Number: | 10.1088/1475-7516/2005/07/011 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:139421 |