Inflation by alignment

Hybrid 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...

F-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...

Inflation by non-minimal coupling

Inflationary scenarios based on simple non-minimal coupling aφ2R and its generalizations are studied. First, generalizing the form of non-minimal coupling to K(φ)R with an arbitrary function K, we show that the flat potential still is obtainable when V (φ)/K2(φ) is asymptotically constant. Very interestingly, if the ratio of the dimensionless quartic coupling(λ) of the inflaton field and the no...

Credit Cards and Inflation By

Article history: Received 8 February 2010 Available online 11 February 2010 JEL classification: D50 D51 D53 D61 E40 E50 E51 E52 E58

The Relation Between Inflation and Inflation Uncertainty In Iran