Reducing the spectral index in F-term hybrid inflation through a complementary modular inflation
نویسندگان
چکیده
منابع مشابه
Reducing the Spectral Index in F-Term Hybrid Inflation
We consider a class of well motivated supersymmetric models of F-term hybrid inflation (FHI) which can be linked to the supersymmetric grand unification. The predicted scalar spectral index ns cannot be smaller than 0.97 and can exceed unity including corrections from minimal supergravity, if the number of e-foldings corresponding to the pivot scale k∗ = 0.002/Mpc is around 50. These results ar...
متن کاملF-Term Hybrid Inflation Followed by Modular Inflation
We consider the well motivated model of the (standard) supersymmetric (SUSY) Fterm hybrid inflation (FHI) which can be realized close to the grand unification (GUT) scale. The predicted scalar spectral index ns cannot be smaller than 0.98 and can exceed unity including corrections from minimal supergravity (SUGRA), if the number of e-foldings corresponding to the pivot scale k∗ = 0.002/Mpc is a...
متن کاملF-term Hybrid Inflation
We consider a class of well motivated supersymmetric models of F-term hybrid inflation (FHI) which can be linked to the supersymmetric grand unification. The predicted scalar spectral indexns cannot be smaller than 0.97 and can exceed unity including corrections from minimal supergravity, if the number of e-foldings corresponding to the pivot scale k∗ = 0.002/Mpc is around 50. These results are...
متن کاملReducing the Spectral Index in Supernatural Inflation
Supernatural inflation is an attractive model based just on a flat direction with soft SUSY breaking mass terms in the framework of supersymmetry. The beauty of the model is inferred from its name that the model needs no fine-tuning. However, the prediction of the spectral index is ns > ∼ 1, in contrast to experimental data. In this paper, we show that the beauty of supernatural inflation with ...
متن کاملHybrid Inflation Followed by Modular Inflation
Inflationary models with a superheavy scale F-term hybrid inflation followed by an intermediate scale modular inflation are considered. The restrictions on the power spectrum PR of curvature perturbation and the spectral index ns from the recent data within the power-law cosmological model with cold dark matter and a cosmological constant can be met provided that the number of e-foldings NHI∗ s...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2007
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2007.06.008