Hilltop Curvatons
| dc.creator | Matsuda, Tomohiro | |
| dc.date | 2007-12-13 | |
| dc.date | 2007-12-18 | |
| dc.date.accessioned | 2026-07-07T11:39:23Z | |
| dc.date.available | 2026-07-07T11:39:23Z | |
| dc.description | We study ``hilltop'' curvatons that evolve on a convex potential. Hilltop curvatons evolving on the Hubble-induced potential are generic if supergravity is assumed in the theory. We do not consider curvatons whose potential is protected from $O(H)$ corrections, where $H$ is the Hubble parameter. We assume that the effective mass of a curvaton is expressed as $m_σ= c H$, where the coefficient varies within $0.2 \le c \le 5$ depending on the circumstances. A negative mass term may lead to enhancement of curvaton fluctuation, which has a significant impact on the energy bound for low-scale inflation. Using a simple curvaton model and following the conventional curvaton hypothesis, we demonstrate the generality of this enhancement. | |
| dc.description | 15 pages, added references | |
| dc.identifier | https://arxiv.org/abs/0712.2103 | |
| dc.identifier | http://arxiv.org/abs/0712.2103 | |
| dc.identifier | Phys.Lett.B659:783-788,2008 | |
| dc.identifier | doi:10.1016/j.physletb.2007.12.008 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/199896 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Hilltop Curvatons | |
| dc.type | text |