Results 11 to 20 of about 32,194 (214)
, 2001 The big bang model and the history of the early universe according to the grand unified theories are introduced. The shortcomings of big bang are discussed together with their resolution by inflationary cosmology.
G. Lazarides
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GRAVITON MODE FUNCTION IN INFLATIONARY COSMOLOGY [PDF]
, 1996 We consider the production of gravitons in an inflationary cosmology by approximating each epoch of change in the equation of state as sudden, from which a simple analytic graviton mode function has been derived.
Kin‐Wang Ng
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Inflationary solutions in quantum cosmology [PDF]
, 1988 We prove that in the Hartle-Hawking approach to quantum cosmology the existence of an inflationary phase is a general property of minisuperspace models given by a closed Friedmann-Robertson-Walker universe containing a massless scalar field with a ...
Giampiero Esposito, G. Platania
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Iso-Spectral Potentials and Inflationary Quantum Cosmology [PDF]
, 2006 Using the factorization approach of quantum mechanics, we obtain a family of isospectral scalar potentials for power law inflationary cosmology. The construction is based on a scattering Wheeler-DeWitt solution.
Antonio de Jesús Balvantín García +3 more
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How Generic Is Eternal Inflation?
Sci, 2022 Everlasting inflation has far-reaching implications for cosmology and the standing of self-localizing inferences made by observers, which have been subjects of renewed interest in light of the growing acceptance of theory landscapes and the attendant ...
Ross Greenwood, Anthony Aguirre
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Post-inflationary brane cosmology [PDF]
, 2001 The brane cosmology has invoked new challenges to the usual Big Bang cosmology. In this paper we present a brief account on thermal history of the post-inflationary brane cosmology. We have realized that it is not obvious that the post-inflationary brane
Affleck +63 more
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Gravitational Fluctuations as an Alternative to Inflation II. CMB Angular Power Spectrum
Universe, 2019 Power spectra always play an important role in the theory of inflation. In particular, the ability to reproduce the galaxy matter power spectrum P ( k ) and the CMB temperature angular power spectrum C l ’s to high accuracy is often ...
Herbert W. Hamber, Lu Heng Sunny Yu
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European Physical Journal C: Particles and Fields, 2021 We propose an extension of the scalaron-Higgs model by a non-minimal coupling of the Standard Model Higgs boson to the quadratic Ricci scalar resulting in a Higgs-dependent scalaron mass.
Anirudh Gundhi, Christian F. Steinwachs
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Gravitational Fluctuations as an Alternative to Inflation
Universe, 2019 The ability to reproduce the observed matter power spectrum P ( k ) to high accuracy is often considered as a triumph of inflation. In this work, we explore an alternative explanation for the power spectrum based on nonperturbative quantum field ...
Herbert W. Hamber
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Bottom-up reconstruction of non-singular bounce in F(R) gravity from observational indices
Nuclear Physics B, 2020 We apply the bottom-up reconstruction technique in the context of bouncing cosmology in F(R) gravity, where the starting point is a suitable ansatz of observable quantity (like spectral index or tensor to scalar ratio) rather than a priori form of Hubble
S.D. Odintsov +2 more
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