Kahler moduli double inflation
arXiv:1010.3095 · doi:10.1088/1475-7516/2011/02/004
Abstract
We show that double inflation is naturally realized in Kähler moduli inflation, which is caused by moduli associated with string compactification. We find that there is a small coupling between the two inflatons which leads to amplification of perturbations through parametric resonance in the intermediate stage of double inflation. This results in the appearance of a peak in the power spectrum of the primordial curvature perturbation. We numerically calculate the power spectrum and show that the power spectrum can have a peak on observationally interesing scales. We also compute the TT-spectrum of CMB based on the power spectrum with a peak and see that it better fits WMAP 7-years data.
21 pages, 8 figures
References in corpus (8)
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- String Cosmology: A Review
- Jumping Through Loops: On Soft Terms from Large Volume Compactifications
- Systematics of String Loop Corrections in Type IIB Calabi-Yau Flux Compactifications
- Roulette Inflation with Kähler Moduli and their Axions
- Power Spectrum of the Density Perturbations From Smooth Hybrid New Inflation Model
- Brane Inflation : String Theory viewed from the Cosmos
- Four-modulus "Swiss Cheese" chiral models
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