On the waterfall behavior in hybrid inflation

Details On the waterfall behavior in hybrid inflation On the waterfall behavior in hybrid inflation

2011-02-28

arxiv.org/abs/1102.5612v1

Prog. Theor. Phys. 126 (2011), 331-350

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

10 pages, 9 figures

Scientific paper

10.1143/PTP.126.331

We revisit the hybrid inflation model focusing on the dynamics of the
waterfall field in an analytical way. It is shown that inflation may last long
enough during the waterfall regime for some parameter regions, confirming the
claim of Clesse. In this case the scalar spectral index becomes red, and can
fall into the best fit range of the WMAP observation.

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