Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-08-02
Phys.Lett. B466 (1999) 85-94
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, one ref added in V2
Scientific paper
10.1016/S0370-2693(99)01089-8
During hybrid inflation, the slowly-rolling inflaton field has a significant coupling to the trigger field which is responsible for most of the potential. Barring a fine-tuned accidental cancellation, this coupling induces a minimal one-loop contribution to the inflaton potential. The requirement that this contribution be not too large constrains a wide class of hybrid inflation models. Assuming that the inflaton perturbation generates structure in the Universe, the inflaton field and/or the trigger field after inflation have to be bigger than $10^9\GeV$. This and other results make hybrid inflation at or below the TeV scale problematical. (There is no problem with hybrid inflation at the high energy scales normally considered.) `New' and thermal inflation seem to be viable alternatives for inflation at or below the TeV scale, including the case that quantum gravity is at the TeV scale. In any case, supersymmetry is needed required during inflation, in order to protect a scalar mass.
No associations
LandOfFree
Constraints on TeV-scale hybrid inflation and comments on non-hybrid alternatives does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Constraints on TeV-scale hybrid inflation and comments on non-hybrid alternatives, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constraints on TeV-scale hybrid inflation and comments on non-hybrid alternatives will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-37605