Scalar perturbations and gravitational waves from inflation

Power spectra and statistics of primordial scalar density perturbations and tensor perturbations primordial gravitational waves are the main observational predictions of the inflationary scenario of the early Universe which give a possibility to confirm or falsify any concrete realization of it By now such subtle and generic consequence of inflation as the scalar spectrum tilt deviation from the Harrison Zeldovich flat spectrum has been reliably confirmed by observational data and the first claim of the