An inflation model with large variations in spectral index
| dc.creator | Feng, Bo | |
| dc.creator | Li, Mingzhe | |
| dc.creator | Zhang, Ren-Jie | |
| dc.creator | Zhang, Xinmin | |
| dc.date | 2003-02-24 | |
| dc.date | 2003-08-13 | |
| dc.date.accessioned | 2026-07-07T11:08:11Z | |
| dc.date.available | 2026-07-07T11:08:11Z | |
| dc.description | Recent fits of cosmological parameters by the Wilkinson Microwave Anisotropy Probe (WMAP) measurement favor a primordial scalar spectrum with varying index. This result, if stands, could severely constrain inflation model buildings. Most extant slow-roll inflation models allow for only a tiny amount of scale variations in the spectrum. We propose in this paper an extra-dimensional inflation model which is natural theoretically and can generate the required variations of the spectral index as implied by the WMAP for suitable choices of parameters. | |
| dc.description | 5 pages, 3 figures, REVTeX 4. Comments on low CMB quadrupoles added; Version accepted for publication in Phys. Rev. D | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0302479 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0302479 | |
| dc.identifier | Phys.Rev.D68:103511,2003 | |
| dc.identifier | doi:10.1103/PhysRevD.68.103511 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/190049 | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | An inflation model with large variations in spectral index | |
| dc.type | text |