S1 - Brane Worlds and Cosmology |
Speaker_ |
Hiramatsu, Takashi |
Co-autors |
Kazuya Koyama, Atsushi Taruya |
Talk _ |
High-energy effects on the spectra of cosmological perturbations in braneworld cosmology |
Abstract _ |
We focus on the cosmological evolution of scalar and tensor perturbations in the Randall-Sundrum single brane model. In this model, there are mainly two high-energy effects, the modification of Friedmann equation and excitation of Kaluza-Klein modes. Using physically plausible initial conditions, we solve numerically the evolution equations of scalar and tensor perturbations and discuss resultant spectra of the curvature perturbation and the gravitational waves. |