Observational constraints on models of inflation from the density perturbation and gravitino production
| dc.creator | Lyth, David H. | |
| dc.date | 2000-12-06 | |
| dc.date.accessioned | 2026-07-07T03:43:22Z | |
| dc.date.available | 2026-07-07T03:43:22Z | |
| dc.description | Present data require a spectral index $n\gsim 0.95$ at something like 1-$σ$ level. If this lower bound survives it will constrain `new' and `modular' inflation models, while raising it to 1.00 would rule out all of these models plus many others. After inflation, gravitinos are created by the oscillating field until the `intermediate' epoch when the Hubble parameter falls below the gravitino mass, or reheating, whichever is earlier. In a wide range of parameter space, these gravitinos are more abundant than those from thermal collisions, leading to stronger cosmological constraints. | |
| dc.description | Updated version of a talk at COSMO2K, to appear in the proceedings | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0012065 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0012065 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/40196 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Observational constraints on models of inflation from the density perturbation and gravitino production | |
| dc.type | text |