Results 31 to 40 of about 32,224 (210)
Eternal Inflation with alpha'-Corrections [PDF]
, 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
openaire +8 more sources
QCD axion window and false vacuum Higgs inflation
Journal of High Energy Physics, 2020 The abundance of the QCD axion is known to be suppressed if the Hubble parameter during inflation, H inf , is lower than the QCD scale, and if the inflation lasts sufficiently long.
Hiroki Matsui +2 more
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Islands and the de Sitter entropy bound
Journal of High Energy Physics, 2022 The de Sitter (dS) entropy bound gives the maximal number of e-folds that non-eternal inflation can last before violating the thermodynamical interpretation of dS space.
Daniele Teresi
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Physics Letters B, 2020 In this paper we put forward the idea that the comoving Hubble horizon undergoes multiple stages of contraction (a.k.a. inflationary phase) and expansion. The observable inflation, that produces the CMB anisotropies and generates primordial gravitational
Mahdi Torabian
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Statistics of inflating regions in eternal inflation [PDF]
Physical Review D, 2019 We compute the distribution of sizes of inflating and non-inflating regions in an eternally inflating Universe. As a first illustrative problem, we study a simple scenario of an eternally inflating Universe in the presence of a massless scalar field $ $ whose field values lie within some finite domain $ \in(- _{cr}, _{cr})$, with $\pm _{cr ...
Jain, Mudit, Hertzberg, Mark P.
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The eternal fractal in the universe [PDF]
, 2001 Models of eternal inflation predict a stochastic self-similar geometry of the universe at very large scales and allow existence of points that never thermalize.
Winitzki, Serge
core +4 more sources
Stochastic inflation with an extremely large number of e-folds
Physics Letters B, 2020 We propose a class of single-field, slow-roll inflation models in which a typical number of e-folds can be extremely large. The key point is to introduce a very shallow local minimum near the top of the potential in a hilltop inflation model.
Naoya Kitajima +2 more
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Implication of the swampland distance conjecture on the Cohen–Kaplan–Nelson bound in de Sitter space
European Physical Journal C: Particles and Fields, 2022 The Cohen–Kaplan–Nelson (CKN) bound formulates the condition that black hole is not produced by the low energy effective field theory dynamics. In de Sitter space it also constrains the maximal size of the matter distribution to be smaller than the ...
Min-Seok Seo
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Langevin analysis of eternal inflation [PDF]
Physical Review D, 2005 22 pages, 2 ...
Gratton, Steven, Turok, Neil
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Eternal inflation and the quantum birth of cosmic structure
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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