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More hilltop inflation models.

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<mark>Journal publication date</mark>10/12/2007
<mark>Journal</mark>Journal of Cosmology and Astroparticle Physics
Issue number12
Volume2007
Pages (from-to)004
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

Using analytic expressions, we explore the parameter space for hilltop inflation models with a potential of the form V0 ± m22−ap. With the positive sign and p>2 this converts the original hybrid inflation model into a hilltop model, allowing the spectral index to agree with the observed value n = 0.95. In some cases the observed value is theoretically favored, while in others there is only the generic prediction .