Planck Scale Effects and the Suppression of Power on the Large Scales in the Primordial Spectrum

Details Planck Scale Effects and the Suppression of Power on the Large Scales in the Primordial Spectrum Planck Scale Effects and the Suppression of Power on the Large Scales in the Primordial Spectrum

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005pasc.conf...38s&link_type=abstract

PASCOS 2004 Part I: Particles, Strings and Cosmology* Part II: Themes in Unification -- The Pran Nath Festschrift†. *,†Proceedin

Physics

Scientific paper

The enormous red-shifting of the modes during the inflationary epoch suggests that physics at the very high energy scales may modify the primordial perturbation spectrum. Therefore, the measurements of the anisotropies in the Cosmic Microwave Background (CMB) could provide us with clues to understanding physics beyond the Planck scale. In this proceeding, we study the Planck scale effects on the primordial spectrum in the power-law inflation using a model which preserves local Lorentz invariance. While our model reproduces the standard spectrum on small scales, it naturally predicts a suppression of power on the large scales--a feature that seems to be necessary to explain deficit of power in the lower multipoles of the CMB.

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