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  Piecewise Silence in Discrete Cosmological Models

Clifton, T., Gregoris, D., & Rosquist, K. (2014). Piecewise Silence in Discrete Cosmological Models. Classical and quantum gravity, 31: 105012. doi:10.1088/0264-9381/31/10/105012.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-001A-0E4F-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-001A-0E51-2
Genre: Journal Article

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1402.3201.pdf (Preprint), 527KB
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 Creators:
Clifton, Timothy, Author
Gregoris, Daniele1, Author
Rosquist, Kjell, Author
Affiliations:
1AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, ou_24008              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc,Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO
 Abstract: We consider a family of cosmological models in which all mass is confined to a regular lattice of identical black holes. By exploiting the reflection symmetry about planes that bisect these lattices into identical halves, we are able to consider the evolution of a number of geometrically distinguished surfaces that exist within each of them. We find that the evolution equations for the reflection symmetric surfaces can be written as a simple set of Friedmann-like equations, with source terms that behave like a set of interacting effective fluids. We then show that gravitational waves are effectively trapped within small chambers for all time, and are not free to propagate throughout the space-time. Each chamber therefore evolves as if it were in isolation from the rest of the universe. We call this phenomenon "piecewise silence".

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 Dates: 2014-02-132014-04-302014
 Publication Status: Published in print
 Pages: 20 pages, 1 figure
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1402.3201
DOI: 10.1088/0264-9381/31/10/105012
 Degree: -

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Title: Classical and quantum gravity
Source Genre: Journal
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Publ. Info: Bristol, U.K. : Institute of Physics
Pages: - Volume / Issue: 31 Sequence Number: 105012 Start / End Page: - Identifier: ISSN: 0264-9381
CoNE: /journals/resource/954925513480_1