COT1 - Dark Energy and Universe Acceleration |
Speaker_ |
Ananda, Kishore |
Co-autors |
Chris Clarkson, David Wands and Marco Bruni |
Talk _ |
The gravitational wave background from scalar perturbations |
Abstract _ |
We investigate a new contribution to the primordial stochastic background of tensor modes from inflation using second order perturbation theory. We study tensor modes generated by the non-linear evolution of primordial scalar perturbations during the radiation-dominated era. The power spectrum of tensor modes generated by the scalar perturbations is investigated. Additionally, deviations from power-law spectra at small scales are studied, and we calculate the bounds placed by current and future gravitational wave detectors. |