Results 11 to 20 of about 294,506 (220)
Eternal inflation and swampland conjectures [PDF]
Physical Review D, 2019 6 pages; references added, version to appear in ...
Hiroki Matsui, Fuminobu Takahashi
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Is noncommutative eternal inflation possible? [PDF]
Journal of Cosmology and Astroparticle Physics, 2007 We investigate the condition for eternal inflation to take place in the noncommutative spacetime. We find that the possibility for eternal inflation's happening is greatly suppressed in this case. If eternal inflation cannot happen in the low energy region where the noncommutativity is very weak (the UV region), it will never happen during the whole ...
Yi-Fu Cai
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A smooth exit from eternal inflation?
Journal of High Energy Physics, 2018 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.
S. W. Hawking, Thomas Hertog
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Is brane inflation eternal? [PDF]
Journal of Cosmology and Astroparticle Physics, 2006 In this paper, we show that eternal inflation of the random walk type is generically absent in the brane inflationary scenario. Depending on how the brane inflationary universe originated, eternal inflation of the false vacuum type is still quite possible.
Chen, Xingang +3 more
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The end of eternal inflation [PDF]
Classical and Quantum Gravity, 2014 We propose a new measure for eternal inflation that includes both conditions, large field fluctuations and smooth homogeneous domains, in the self reproducing probability estimate. We show that due to the increasing inhomogeneities in the background spacetime fractal, self-reproduction stops within a finite time t_f, thus inflation can not be eternal.
Mersini-Houghton, Laura +1 more
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Corpuscular consideration of eternal inflation [PDF]
The European Physical Journal C, 2015 10 pages, 2 figures; revised version to match submitted ...
Kühnel, Florian, Sandstad, Marit
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Local Observation in Eternal Inflation
Physical Review Letters, 2011 We consider landscape models that admit several regions where the conditions for eternal inflation hold. It is shown that one can use the no-boundary wave function to calculate small departures from homogeneity within our past light cone despite the possibility of much larger fluctuations on super horizon scales.
Hartle, J., Hawking, S.W., Hertog, T.
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Annals of the New York Academy of Sciences, 2001 Abstract: The basic workings of inflationary models are summarized, along with the arguments that strongly suggest that our universe is the product of inflation. It is argued that essentially all inflationary models lead to (future‐)eternal inflation, which implies that an infinite number of pocket universes are produced.
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Is non-minimal inflation eternal? [PDF]
Nuclear Physics B, 2010 The possibility that the non-minimal coupling inflation could be eternal is investigated. We calculate the quantum fluctuation of the inflaton in a Hubble time and find that it has the same value as in the minimal case in the slow-roll limit. Armed with this result, we have studied some concrete non-minimal inflationary models including the chaotic ...
Chao-Jun Feng, Xin–Zhou Li
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Measure problem for eternal and non-eternal inflation [PDF]
Journal of Cosmology and Astroparticle Physics, 2010 We study various probability measures for eternal inflation by applying their regularization prescriptions to models where inflation is not eternal. For simplicity we work with a toy model describing inflation that can interpolate between eternal and non-eternal inflation by continuous variation of a parameter. We investigate whether the predictions of
Linde, Andrei, Noorbala, Mahdiyar
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