Monodromy in the CMB: Gravity Waves and String Inflation
| dc.creator | Silverstein, Eva | |
| dc.creator | Westphal, Alexander | |
| dc.date | 2008-03-21 | |
| dc.date | 2008-03-23 | |
| dc.date.accessioned | 2026-07-07T11:49:16Z | |
| dc.date.available | 2026-07-07T11:49:16Z | |
| dc.description | We present a simple mechanism for obtaining large-field inflation, and hence a gravitational wave signature, from string theory compactified on twisted tori. For Nil manifolds, we obtain a leading inflationary potential proportional to phi^(2/3) in terms of the canonically normalized field phi, yielding predictions for the tilt of the power spectrum and the tensor-to-scalar ratio, $n_s\approx 0.98$ and $r\approx 0.04$ with 60 e-foldings of inflation; we note also the possibility of a variant with a candidate inflaton potential proportional to phi^(2/5). The basic mechanism involved in extending the field range -- monodromy in D-branes as they move in circles on the manifold -- arises in a more general class of compactifications, though our methods for controlling the corrections to the slow-roll parameters require additional symmetries. | |
| dc.description | 43 pages, latex. 4 figures | |
| dc.identifier | https://arxiv.org/abs/0803.3085 | |
| dc.identifier | http://arxiv.org/abs/0803.3085 | |
| dc.identifier | Phys.Rev.D78:106003,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.78.106003 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/203172 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Monodromy in the CMB: Gravity Waves and String Inflation | |
| dc.type | text |