Signatures of Quantum Gravity in the Large-Scale Universe

Abstract

The quantum gravity processes that have taken place in the very early Universe are probably responsible for the observed large-scale cosmological perturbations. The comparison of the theory with the detected microwave background anisotropies favors the conclusion that the very early Universe was not driven by a scalar field with whichever scalar field potential. At the same time, the observations allow us to conclude that there is a good probability of a direct detection of the higher frequency relic gravitational waves with the help of the advanced laser interferometers.

Comments: 20 pages; crckapb.sty; contribution based on a talk given at the 4-th Colloque Cosmologie, Paris, June 1997