Natural Inflation, Planck Scale Physics and Oscillating Primordial Spectrum

Details Natural Inflation, Planck Scale Physics and Oscillating Primordial Spectrum Natural Inflation, Planck Scale Physics and Oscillating Primordial Spectrum

2002-09-12

arxiv.org/abs/astro-ph/0209242v2

Int.J.Mod.Phys.D14:1347,2005

Astronomy and Astrophysics

Astrophysics

20 pages, 11 figures. To appear in Int J Mod. Phys. D

Scientific paper

10.1142/S0218271805006985

In the ``natural inflation'' model, the inflaton potential is periodic. We show that Planck scale physics may induce corrections to the inflaton potential, which is also periodic with a greater frequency. Such high frequency corrections produce oscillating features in the primordial fluctuation power spectrum, which are not entirely excluded by the current observations and may be detectable in high precision data of cosmic microwave background (CMB) anisotropy and large scale structure (LSS) observations.

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