Results 21 to 30 of about 691 (230)
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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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
Andrei Linde
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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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Non-perpetual eternal inflation and the emergent de Sitter Swampland conjecture
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
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Pre-inflation from the multiverse: can it solve the quadrupole problem in the cosmic microwave background? [PDF]
European Physical Journal C: Particles and Fields, 2018 We analyze a quantized toy model of a universe undergoing eternal inflation using a quantum-field-theoretical formulation of the Wheeler–DeWitt equation.
João Morais +3 more
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Eternal inflation with Liouville cosmology [PDF]
Nuclear Physics B, 2011 32 pages, v2: published version, many ...
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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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