Journal
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
Volume 14, Issue 8, Pages 1347-1364Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218271805006985
Keywords
natural inflation; primordial spectrum; CMB; LSS; cosmic variance
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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 axe 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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