The importance of being warm (during inflation)
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In this article, the amplitude of primordial curvature perturbations is enhanced when a radiation bath at a temperature T > H is sustained during inflation by dissipative particle production, which is particularly significant when a non-trivial statistical ensemble of inflaton fluctuations is also maintained.About:
This article is published in Physics Letters B.The article was published on 2014-05-01 and is currently open access. It has received 186 citations till now. The article focuses on the topics: Warm inflation & Inflaton.read more
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Reheating predictions in single field inflation
Jessica L. Cook,Emanuela Dimastrogiovanni,Damien A. Easson,Lawrence M. Krauss,Lawrence M. Krauss +4 more
TL;DR: In this paper, the authors consider cosmological evolution for observable CMB scales from the time of Hubble crossing to the present time and derive relations between the reheating duration (or final temperature), its equation of state parameter, and the scalar power spectrum amplitude and spectral index.
Journal ArticleDOI
Reheating predictions in single field inflation
Jessica L. Cook,Emanuela Dimastrogiovanni,Damien A. Easson,Lawrence M. Krauss,Lawrence M. Krauss +4 more
TL;DR: In this paper, the authors consider cosmological evolution for observable CMB scales from the time of Hubble crossing to the present time and derive relations between the reheating duration, its equation of state parameter, and the scalar power spectrum amplitude and spectral index.
Journal ArticleDOI
Universality classes of inflation
TL;DR: In this paper, the authors investigated all single-field, slow-roll inflationary models whose slow roll parameters scale as 1/N in the limit of a large number of e-folds.
Cosmology for Grand Unified Theories with Radiatively Induced Symmetry Breaking
TL;DR: In this article, the treatment of first-order phase transitions for standard grand unified theories is shown to break down for models with radiatively induced spontaneous symmetry breaking, leading to an explanation of the cosmological homogeneity, flatness, and monopole puzzles.
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Gravitational waves from inflation
Maria Chiara Guzzetti,Nicola Bartolo,Nicola Bartolo,Michele Liguori,Michele Liguori,Sabino Matarrese +5 more
TL;DR: In this article, the authors review the main mechanisms of gravitational-wave production, ranging from quantum fluctuations of the gravitational field to other mechanisms that can take place during or after inflation, e.g. gravitational waves generated as a consequence of extra particle production during inflation, or during the (p)reheating phase.
References
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Inflationary universe: A possible solution to the horizon and flatness problems
TL;DR: In this paper, the authors proposed a model of hot big-bang cosmology where the early universe is assumed to be highly homogeneous, in spite of the fact that separated regions were causally disconnected (horizon problem).
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A new type of isotropic cosmological models without singularity
TL;DR: In this paper, the Einstein equations with quantum one-loop contributions of conformally covariant matter fields are shown to admit a class of nonsingular isotropic homogeneous solutions that correspond to a picture of the universe being initially in the most symmetric (de Sitter) state.
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A new inflationary universe scenario: A possible solution of the horizon, flatness, homogeneity, isotropy and primordial monopole problems
TL;DR: A new inflationary universe scenario is suggested in this paper, which is free of the shortcomings of the previous one and provides a possible solution of the horizon, flatness, homogeneity and isotropy problems in cosmology.
Journal ArticleDOI
Cosmology for Grand Unified Theories with Radiatively Induced Symmetry Breaking
TL;DR: In this article, the treatment of first-order phase transitions for standard grand unified theories is shown to break down for models with radiatively induced spontaneous symmetry breaking, leading to an explanation of the cosmological homogeneity, flatness, and monopole puzzles.
A New Inflationary Universe Scenario: A Possible Solution of the Horizon, Flatness, Homogeneity, Isotropy and Primordial Monopole Problems
TL;DR: A new inflationary universe scenario is suggested in this paper, which is free of the shortcomings of the previous one and provides a possible solution of the horizon, flatness, homogeneity and isotropy problems in cosmology.