179 citations · 362 across the 4 of their papers we have counts for
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gr-qc2007★ 104 cited
Causality and the speed of sound
George Ellis, Roy Maartens, Malcolm MacCallum
A usual causal requirement on a viable theory of matter is that the speed of sound be at most the speed of light. In view of various recent papers querying this limit, the question…
gr-qc2005★ 179 cited
The universe seen at different scales
G. F. R. Ellis, T. Buchert
A large-scale smoothed-out model of the universe ignores small-scale inhomogeneities, but the averaged effects of those inhomogeneities may alter both observational and dynamical r…
gr-qc2001
Exact Inflation Braneworlds
Deon Solomons, Peter Dunsby, George Ellis
In Randall-Sundrum type braneworld cosmologies, the dynamical equations on the three-brane differ from the general relativity equations by terms that carry the effects of embedding…