Abstract
We examine the hypothesis that inflation is primarily driven by vacuum energy at a scale indicated by gauge coupling unification. Concretely, we consider a class of hybrid inflation models wherein the vacuum energy associated with a grand unified theory condensate provides the dominant energy during inflation, while a second "inflaton" scalar slow rolls. We show that it is possible to obtain significant tensor-to-scalar ratios while fitting the observed spectral index.
Original language | English (US) |
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Article number | 063516 |
Journal | Physical Review D |
Volume | 95 |
Issue number | 6 |
DOIs | |
State | Published - Mar 17 2017 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)