Journal of High Energy Physics
April 2018, 2018:147 | Cite as
A smooth exit from eternal inflation?
Authors and affiliations
S. W. Hawking 1
Thomas Hertog 2
Email author
1.DAMTP, CMS Cambridge U.K.
2.Institute for Theoretical Physics University of Leuven Leuven Belgium
Open AccessRegular Article - Theoretical Physics
First Online: 27 April 2018
Source/Fonte: Universe Review CA
Abstract
The usual theory of inflation breaks down in eternal inflation. We derive a dual description of eternal inflation in terms of a deformed Euclidean CFT located at the threshold of eternal inflation. The partition function gives the amplitude of different geometries of the threshold surface in the no-boundary state. Its local and global behavior in dual toy models shows that the amplitude is low for surfaces which are not nearly conformal to the round three-sphere and essentially zero for surfaces with negative curvature. Based on this we conjecture that the exit from eternal inflation does not produce an infinite fractal-like multiverse, but is finite and reasonably smooth.
Keywords
AdS-CFT Correspondence Gauge-gravity correspondence Models of Quantum Gravity Spacetime Singularities
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