DBI N-flation
| dc.creator | Ward, John | |
| dc.date | 2007-11-06 | |
| dc.date | 2007-11-26 | |
| dc.date.accessioned | 2026-07-07T13:16:12Z | |
| dc.date.available | 2026-07-07T13:16:12Z | |
| dc.description | We investigate DBI inflation using $N$ multiple branes and show how the configuration is equivalent to a single wrapped $D5$-brane with flux. We then show how 1/N corrections can be implemented, and we examine the sound speed and levels of non-Gaussianities in two distinct cases. For models with constant warping we find that the non-Gaussian amplitude is bounded from above (as a function of $γ$). For $AdS$ backgrounds we find that the signature is generally large and positive, although is no longer globally defined over the full phase space. We then investigate an inflationary mechanism using a representation cascade, whereby the transition from a reducible representation to the irrep drives inflation. | |
| dc.description | 33 pages, 8 figures. References added and typos corrected. Submitted to JHEP | |
| dc.identifier | https://arxiv.org/abs/0711.0760 | |
| dc.identifier | http://arxiv.org/abs/0711.0760 | |
| dc.identifier | JHEP 0712:045,2007 | |
| dc.identifier | doi:10.1088/1126-6708/2007/12/045 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/230717 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | Astrophysics | |
| dc.title | DBI N-flation | |
| dc.type | text |