Saving Natural Inflation
نویسندگان
چکیده
منابع مشابه
Saving Natural Inflation
Slow-roll inflation requires the inflaton field to have an exceptionally flat potential, which combined with measurements of the scale of inflation demands some degree of finetuning. Alternatively, the flatness of the potential could be due to the inflaton’s origin as a pseudo-Goldstone boson, as in Natural Inflation. Alas, consistency with Planck data places the original proposal of Natural In...
متن کاملInflation, Holding Gains and Saving
The author is Head of the Economic Statistics and National Accounts Division in the Economics and Statistics Department. An earlier version of this paper was presented at the International Conference on Economic Policy and National Accounting in Inflationary Conditions held at the University of Bergamo in January 1984. The views expressed are those of the author and should not be attributed to ...
متن کاملNatural Supergravity Inflation
We identify a new mechanism in supergravity theories which leads to successful inflation without any need for fine tuning. The simplest model yields a spectrum of density fluctuations tilted away from scale-invariance and negligible gravitational waves. We demonstrate that this is consistent with the observed large-scale structure for a cold dark matter dominated, critical density universe. The...
متن کاملNatural Magnetogenesis from Inflation
We consider the gravitational generation of the massive Z boson field of the standard model, due to the natural breaking of its conformal invariance during inflation. The electroweak symmetry restoration at the end of inflation turns the almost scale-invariant superhorizon Z spectrum into a hypermagnetic field, which transforms into a regular magnetic field at the electroweak phase transition. ...
متن کاملNatural Supergravity Inflation Jennifer
We identify a new mechanism in supergravity theories which leads to successful inflation without any need for fine tuning. The simplest model yields a spectrum of density fluctuations tilted away from scale-invariance and negligible gravitational waves. We demonstrate that this is consistent with the observed large-scale structure for a cold dark matter dominated, critical density universe. The...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2015
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2015/02/008