Starobinsky-like inflation from induced gravity
TLDR
In this paper, a general criterion that defines all single-field models leading to Starobinsky-like inflation and to universal predictions for the spectral index and tensor-to-scalar ratio was derived.About:
This article is published in Physics Letters B.The article was published on 2014-06-02 and is currently open access. It has received 102 citations till now. The article focuses on the topics: Planck length & Planck mass.read more
Citations
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Journal ArticleDOI
Unity of Cosmological Inflation Attractors
TL;DR: The aim of this Letter is to elucidate the common denominator of these attractors: their robust predictions stem from a joint pole of order 2 in the kinetic term of the inflaton field in the Einstein frame formulation prior to switching to the canonical variables.
Book ChapterDOI
Inflationary Cosmology after Planck 2013
TL;DR: In this article, a general review of inflationary cosmology and its present status, in view of the 2013 data release by the Planck satellite, is given, with a specific emphasis on the new broad class of theories, the cosmological attractors, which have nearly model-independent predictions converging at the sweet spot of the planck data in the (n_s,r) plane.
Journal ArticleDOI
Single field double inflation and primordial black holes
TL;DR: In this article, the authors study the conditions that allow single field inflation dynamics on small cosmological scales to significantly differ from that of the large scales probed by the observations of cosmic microwave background.
Journal ArticleDOI
α-attractors: Planck, LHC and dark energy
TL;DR: In this article, the authors develop four-parameter supergravity models of inflation and dark energy, constrained so that the mass of gravitino m 3/2 and the tensor-to-scalar ratio r are free parameters.
Journal ArticleDOI
Palatini inflation in models with an $R^2$ term
Ignatios Antoniadis,Ignatios Antoniadis,Alexandros Karam,Angelos Lykkas,Kyriakos Tamvakis,Kyriakos Tamvakis +5 more
TL;DR: In this paper, the authors consider scalars, minimally or non-minimally coupled to the Starobinsky model, such as a quadratic model, the induced gravity model or the standard Higgs-like inflation model and analyze the corresponding modifications favorable to inflation.
References
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Journal ArticleDOI
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.
Journal ArticleDOI
Planck 2015 results. XX. Constraints on inflation
Peter A. R. Ade,Nabila Aghanim,Monique Arnaud,Frederico Arroja,M. Ashdown,J. Aumont,Carlo Baccigalupi,Mario Ballardini,A. J. Banday,R. B. Barreiro,Nicola Bartolo,E. Battaner,K. Benabed,Alain Benoit,A. Benoit-Lévy,J.-P. Bernard,Marco Bersanelli,P. Bielewicz,J. J. Bock,Anna Bonaldi,Laura Bonavera,J. R. Bond,Julian Borrill,François R. Bouchet,F. Boulanger,M. Bucher,Carlo Burigana,R. C. Butler,Erminia Calabrese,Jean-François Cardoso,A. Catalano,Anthony Challinor,A. Chamballu,R.-R. Chary,H. C. Chiang,P. R. Christensen,Sarah E. Church,David L. Clements,S. Colombi,L. P. L. Colombo,C. Combet,D. Contreras,F. Couchot,A. Coulais,B. P. Crill,A. Curto,F. Cuttaia,Luigi Danese,R. D. Davies,R. J. Davis,P. de Bernardis,A. de Rosa,G. de Zotti,Jacques Delabrouille,F.-X. Désert,Jose M. Diego,H. Dole,S. Donzelli,Olivier Doré,Marian Douspis,A. Ducout,X. Dupac,George Efstathiou,F. Elsner,Torsten A. Ensslin,H. K. Eriksen,James R. Fergusson,Fabio Finelli,Olivier Forni,M. Frailis,Aurelien A. Fraisse,E. Franceschi,A. Frejsel,Andrei V. Frolov,S. Galeotta,Silvia Galli,K. Ganga,C. Gauthier,M. Giard,Y. Giraud-Héraud,E. Gjerløw,J. González-Nuevo,Krzysztof M. Gorski,Serge Gratton,A. Gregorio,Alessandro Gruppuso,Jon E. Gudmundsson,Jan Hamann,Will Handley,F. K. Hansen,Duncan Hanson,D. L. Harrison,Sophie Henrot-Versille,C. Hernández-Monteagudo,D. Herranz,S. R. Hildebrandt,E. Hivon,Michael P. Hobson,W. A. Holmes +98 more
TL;DR: In this article, the authors report on the implications for cosmic inflation of the 2018 Release of the Planck CMB anisotropy measurements, which are fully consistent with the two previous Planck cosmological releases, but have smaller uncertainties thanks to improvements in the characterization of polarization at low and high multipoles.
Journal ArticleDOI
The Standard Model Higgs boson as the inflaton
TL;DR: In this paper, the authors argue that the Higgs boson of the Standard Model can lead to inflation and produce cosmological perturbations in accordance with observations, and that the essential requirement is the non-minimal coupling of the scalar field to gravity; no new particle besides already present in the electroweak theory is required.
Journal ArticleDOI
Higgs mass and vacuum stability in the Standard Model at NNLO
Giuseppe Degrassi,Stefano Di Vita,J. Elias-Miro,José Ramón Espinosa,José Ramón Espinosa,Gian F. Giudice,Gino Isidori,Alessandro Strumia,Alessandro Strumia +8 more
TL;DR: In this article, the authors presented the first complete next-to-next-toleading order analysis of the Standard Model Higgs potential, showing that at the Planck scale, absolute stability of the potential is not guaranteed at 98% C.L. for Mh < 126 GeV.
Journal ArticleDOI
Investigating the near-criticality of the Higgs boson
Dario Buttazzo,Giuseppe Degrassi,Pier Paolo Giardino,Pier Paolo Giardino,Gian F. Giudice,Filippo Sala,Alberto Salvio,Alessandro Strumia +7 more
TL;DR: In this article, the parameters of the Higgs potential, the top Yukawa coupling and the electroweak gauge couplings were extracted from data with full 2-loop NNLO precision.
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