http://arxiv.org/abs/1612.07406
There is a widespread belief among inflationary cosmologists that a local observer cannot sense super-horizon gravitons. The argument goes that a local observer would subsume super-horizon gravitons into a redefinition of his coordinate system. We show that adopting this view for pure gravity on de Sitter background leads to time variation in the Hubble parameter measured by a local observer. It also leads to a violation of the gravitational field equation $R = 4 \Lambda$ because that equation is obeyed by the full metric, rather than the one which has been cleansed of super-horizon modes.
S. Basu, N. Tsamis and R. Woodard
Fri, 23 Dec 16
60/60
Comments: 20 pages, 2 figures, uses LaTeX2e
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