Slow-roll reconstruction for running spectral index
نویسنده
چکیده
We not only reconstruct the slow-roll parameters for fit to the running spectral index from WMAP three-year data in the usual slow-roll inflation model and noncommutative inflation model, but also investigate the evolution of these slow-roll parameters. Requiring slow-roll inflation lasts more than 20 e-folds after CMB scales leave the horizon suggests that the potential at the last stage of inflation takes the form V (φ) = V0(1+ ηc 2 (φ−φc) M p ), where ηc is a constant. A natural mechanism to end inflation at φ = φc is hybrid type inflation.
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