Piecewise silence in discrete cosmological models
Number of Authors: 3
2014 (English)In: Classical and quantum gravity, ISSN 0264-9381, E-ISSN 1361-6382, Vol. 31, no 10, 105012- p.Article in journal (Refereed) Published
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'.
Place, publisher, year, edition, pages
2014. Vol. 31, no 10, 105012- p.
cosmology, cosmological models, mathematical models
Astronomy, Astrophysics and Cosmology
IdentifiersURN: urn:nbn:se:su:diva-105191DOI: 10.1088/0264-9381/31/10/105012ISI: 000336092700013OAI: oai:DiVA.org:su-105191DiVA: diva2:732520