Results 11 to 20 of about 305,041 (219)
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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Holographic (eternal) inflation
Journal of High Energy PhysicsWe identify a minisuperspace of complex deformations of ABJM theory for which the partition function specifies the amplitude of an eternally inflating universe.
Thomas Hertog +2 more
doaj +6 more sources
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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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 ...
Cai, Yi-Fu, Wang, Yi
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Non-perpetual eternal inflation and the emergent de Sitter Swampland conjecture [PDF]
European Physical Journal C: Particles and FieldsWe introduce a novel correlation, $$n_{\text {s}}$$ n s - $$\Delta N$$ Δ N , connecting CMB parameters to the required total e-folds for eternal inflation. This correlation provides a robust tool for evaluating eternal (string) inflation models using CMB
Omer Guleryuz
doaj +2 more sources
Eternal inflation and the quantum birth of cosmic structure [PDF]
European Physical Journal C: Particles and Fields, 2017 We consider the eternal inflation scenario of the slow-roll/chaotic type with the additional element of an objective collapse of the wave function. The incorporation of this new agent to the traditional inflationary setting might represent a possible ...
Gabriel León
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A stochastic measure for eternal inflation [PDF]
Journal of Cosmology and Astroparticle Physics, 2007 We use the stochastic approach to investigate the measure for slow roll eternal inflation. The probability for the universe of a given Hubble radius can be calculated in this framework. In a solvable model, it is shown that the probability for the universe to evolve from a state with a smaller Hubble radius to that of a larger Hubble radius is ...
Li, Miao, Wang, Yi
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Eternal Inflation with alpha'-Corrections
, 2005 Higher-order alpha'-corrections are a generic feature of type IIB string compactifications. In KKLT-like models of moduli stabilization they provide a mechanism of breaking the no-scale structure of the volume modulus. We present a model of inflation driven by the volume modulus of flux compactifications of the type IIB superstring.
Westphal, Alexander
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Energy conditions allow eternal inflation [PDF]
, 2021 Eternal inflation requires upward fluctuations of the energy in a Hubble volume, which appear to violate the energy conditions. In particular, a scalar field in an inflating spacetime should obey the averaged null energy condition, which seems to rule ...
Olum, K.D. +3 more
core +1 more source