Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2006-02-17
Phys.Rev. D73 (2006) 124031
Physics
High Energy Physics
High Energy Physics - Theory
7 pages, 6 figures
Scientific paper
10.1103/PhysRevD.73.124031
We study the spectrum of gravitational waves generated from inflation in the Randall-Sundrum braneworld. Since the inflationary gravitational waves are of quantum-mechanical origin, the initial configuration of perturbations in the bulk includes Kaluza-Klein quantum fluctuations as well as fluctuations in the zero mode. We show, however, that the initial fluctuations in Kaluza-Klein modes have no significant effect on the late time spectrum, irrespective of the energy scale of inflation and the equation of state parameter in the post-inflationary stage. This is done numerically, using the Wronskian formulation.
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