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arXiv · hep-ph/9606412

More varieties of hybrid inflation

David H. Lyth·Ewan D. Stewart
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Abstract

It is pointed out that hybrid inflation can be implemented with the inflaton field rolling away from the origin instead of towards it. This `inverted' hybrid inflation has a spectral index $ n < 1 $, in contrast with ordinary hybrid inflation which has $ n \gtrsim 1 $, so a measured value of $n$ substantially different from 1 would distinguish the two. Other generalisations of hybrid inflation are also considered.

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David H. Lyth, Ewan D. Stewart. 1996-06-22. More varieties of hybrid inflation. https://doi.org/10.1103/physrevd.54.7186

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