Supersymmetric Hybrid Inflation: Explaining the Spectrum of Cosmological Perturbations through a Multiple-Stage Inflationary Model
نویسنده
چکیده
We explore the possibility that a multiple-stage inflationary scenario based on supersymmetric GUT models, can account for the break at kb ≃ 0.05 h Mpc −1 in the power spectrum of galaxy clustering, while it reproduces the angular power spectrum of cosmic microwave background anisotropies.
منابع مشابه
Spectrum of Cosmological Perturbations from Multiple-Stage Inflation
Within the context of supersymmetric hybrid inflation, we study a multiple-stage inflationary scenario that can generate a primordial spectrum of adiabatic density perturbations with a break at kb ≃ 0.05 h Mpc. The presence of such a break is supported by the APM galaxy survey data. We consider a specific model within this scenario and confront it with observational data. We reproduce the angul...
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The early stages of the universe evolution are discussed according to the hot big bang model and the grand unified theories. The shortcomings of big bang are summarized and their resolution by inflationary cosmology is sketched. Cosmological inflation, the subsequent oscillation and decay of the inflaton field, and the resulting reheating of the universe are studied in some detail. The density ...
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The shortcomings of the Standard Big Bang Cosmological Model as well as their resolution in the context of inflationary cosmology are discussed. The inflationary scenario and the subsequent oscillation and decay of the inflaton field are then studied in some detail. The density perturbations produced during inflation and their evolution during the matter dominated era are presented. The tempera...
متن کاملar X iv : h ep - p h / 98 02 41 5 v 2 3 M ay 1 99 9 INFLATION
The shortcomings of the Standard Big Bang Cosmological Model as well as their resolution in the context of inflationary cosmology are discussed. The inflationary scenario and the subsequent oscillation and decay of the inflaton field are then studied in some detail. The density perturbations produced during inflation and their evolution during the matter dominated era are presented. The tempera...
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The non-supersymmetric and supersymmetric versions of hybrid inflation are summarized. In the latter, the necessary inclination along the inflationary trajectory is provided by radiative corrections. Supersymmetric hybrid inflation (with its extensions) is an extremely ‘natural’ inflationary scenario. The reasons are that it does not require ‘tiny’ parameters, its superpotential has the most ge...
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