Second-order corrections to slow-roll inflation in the brane cosmology

Details Second-order corrections to slow-roll inflation in the brane cosmology Second-order corrections to slow-roll inflation in the brane cosmology

2004-03-21

arxiv.org/abs/hep-th/0403210v2

Phys.Rev. D70 (2004) 027302

Physics

High Energy Physics

High Energy Physics - Theory

6 pages

Scientific paper

10.1103/PhysRevD.70.027302

We calculate the power spectrum, spectral index, and running spectral index for the RS-II brane inflation in the high-energy regime using the slow-roll expansion. There exist several modifications. As an example, we take the power-law inflation by choosing an inverse power-law potential. When comparing these with those arisen in the standard inflation, we find that the power spectrum is enhanced and the spectral index is suppressed, while the running spectral index becomes zero as in the standard inflation. However, since second-order corrections are rather small, these could not play a role of distinguishing between standard and brane inflations.

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