Cosmological parameters in the noncommutative inflation

Details Cosmological parameters in the noncommutative inflation Cosmological parameters in the noncommutative inflation

2004-07-09

arxiv.org/abs/hep-th/0407066v2

Phys.Lett. B601 (2004) 1-9

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, version to appear in PLB

Scientific paper

10.1016/j.physletb.2004.09.017

We investigate how the uncertainty of noncommutative spacetime could explain the WMAP data. For this purpose, the spectrum is divided into the IR and UV region. We introduce a noncommutative parameter of $\gamma_0$ in the IR region and a noncommutative parameter of $\mu_0$ in the UV region. We calculate cosmological parameters using the slow-roll expansion in the UV region and a perturbation method in the IR region. The power-law inflation is chosen to obtain explicit forms for the power spectrum, spectral index, and running spectral index. Further, these are used to fit the data.

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