Constraining hybrid inflation models with WMAP three-year results
| dc.creator | Cardoso, Antonio | |
| dc.date | 2006-10-03 | |
| dc.date | 2007-01-11 | |
| dc.date.accessioned | 2026-07-07T10:23:44Z | |
| dc.date.available | 2026-07-07T10:23:44Z | |
| dc.description | We reconsider the original model of quadratic hybrid inflation in light of the WMAP three-year results and study the possibility of obtaining a spectral index of primordial density perturbations, $n_s$, smaller than one from this model. The original hybrid inflation model naturally predicts $n_s\geq1$ in the false vacuum dominated regime but it is also possible to have $n_s<1$ when the quadratic term dominates. We therefore investigate whether there is also an intermediate regime compatible with the latest constraints, where the scalar field value during the last 50 e-folds of inflation is less than the Planck scale. | |
| dc.description | 7 pages, 10 figures. V2: References added | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0610074 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0610074 | |
| dc.identifier | Phys.Rev.D75:027302,2007 | |
| dc.identifier | doi:10.1103/PhysRevD.75.027302 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/175940 | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Constraining hybrid inflation models with WMAP three-year results | |
| dc.type | text |