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On the paradox of Hawking radiation in a maximally extended Schwarzschild solution
George F R Ellis
This paper considers the effect of Hawking radiation on an eternal black hole - that is. a maximally extended Schwarzschild solution. Symmetry considerations that hold independent…
Astrophysical black holes may radiate, but they do not evaporate
George F R Ellis
This paper argues that the effect of Hawking radiation on an astrophysical black hole situated in a realistic cosmological context is not total evaporation of the black hole; rathe…
Discrete Newtonian Cosmology
Gary W Gibbons, George F R Ellis
In this paper we lay down the foundations for a purely Newtonian theory of cosmology, valid at scales small compared with the Hubble radius, using only Newtonian point particles ac…
The Trace-Free Einstein Equations and inflation
George F R Ellis
The trace-free version of the Einstein Gravitational equations, essentially equivalent to unimodular gravity, can solve the troubling issue of the huge discrepancy between quantum…
Variations on Birkhoff's theorem
George F R Ellis, Rituparno Goswami
The relation between the expanding universe and local vacuum solutions, such as that for the Solar System, is crucially mediated by Birkhoff's theorem. Here we consider how that re…
A Gravitational Entropy Proposal
Timothy Clifton, George F R Ellis, Reza Tavakol
We propose a thermodynamically motivated measure of gravitational entropy based on the Bel-Robinson tensor, which has a natural interpretation as the effective super-energy-momentu…