Transplanckian signatures in WMAP3?

Abstract

In this note we investigate how a possible signal in the WMAP3 data of rapid oscillations in the primordial spectrum can be accommodated into an effective model of transplanckian physics including back reaction. The results, if due to a real effect, would indicate the presence of a low fundamental scale -- possibly the string scale -- around $2.2\cdot 10^{-5}{M}_{pl}$.

8 pages

References in corpus (2)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Inflation after WMAP3: Confronting the Slow-Roll and Exact Power Spectra with CMB Data

Cited by in corpus (2)

• Enhanced Non-Gaussianity from Excited Initial States
• A Constraint on Planck-scale Modifications to Electrodynamics with CMB polarization data