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Inflationary Cosmology


This work has been archived as it has been superseded by more recent developments in our model. In light of new insights, the concept of inflation as presented here is no longer deemed necessary. For the latest and most accurate formulation, please refer to our updated work: https://zenodo.org/records/15046630 ...
Will Kinney
semanticscholar   +2 more sources

Extended inflationary cosmology.

Physical Review Letters, 1989
We present a new type of inflationary scenario based on metric formulations of gravity different from that of Einstein, e.g., a Brans-Dicke theory of gravity. Unlike previous inflation models, the inflationary phase transition can be completed via bubble nucleation.
Daile La, P. Steinhardt
semanticscholar   +3 more sources

Inflationary axion cosmology

Physical Review Letters, 1991
If Peccei-Quinn (PQ) symmetry is broken after inflation, the initial axion angle is a random variable on cosmological scales; based on this fact, estimates of the relic-axion mass density give too large a value if the axion mass is less than about 10 to the -6th eV. This bound can be evaded if the universe underwent inflation after PQ-symmetry breaking
, Turner, , Wilczek
openaire   +3 more sources

Inflationary cosmology: First 30+ years

International Journal of Modern Physics D, 2015
Starting with an account of historical developments in Japan and Russia, we review inflationary cosmology and its basic predictions in a pedagogical manner. We also introduce the generalized G-inflation model, in terms of which all the known single-field inflation models may be described.
Katsuhiko Sato, Jun'ichi Yokoyama
semanticscholar   +3 more sources

Inflationary cosmology

Pramana, 1993
We review the basic features of the inflationary scenarios associated with phase transitions in the very early universe.
openaire   +1 more source

Exact inflationary cosmologies with exit

Physical Review D, 1995
We find exact inflationary solutions with exit, including exact forms of the potential, by specifying the rate of expansion and using the number of e-foldings as the effective dynamical variable. These include solutions in which the potential drives nearly exponential or power-law inflation for ${\mathit{t}}_{\mathit{i}}$\ensuremath{\le}t${\mathit{t}}_{
, Maartens, , Taylor, , Roussos
openaire   +2 more sources

Observational constraints on inflationary models with non-minimally derivative coupling by ACT

Journal of Cosmology and Astroparticle Physics
The most recent data release from the Atacama Cosmology Telescope (ACT) reveals a larger value of the scalar spectral tilt n_s, ruling out a broad class of inflationary attractors.
Qing Gao   +3 more
semanticscholar   +1 more source

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