Large Non-Gaussianity Implication for Curvaton Scenario
| dc.creator | Huang, Qing-Guo | |
| dc.date | 2008-01-03 | |
| dc.date | 2008-10-03 | |
| dc.date.accessioned | 2026-07-07T11:54:57Z | |
| dc.date.available | 2026-07-07T11:54:57Z | |
| dc.description | We argue that the typical energy density of a light scalar field should not be less than $H^4$ in the inflationary Universe. This requirement implies that the non-Gaussianity parameter $f_{NL}$ is typically bounded by the tensor-scalar ratio $r$ from above, namely $f_{NL}\lesssim 518\cdot r^{1\over 4}$. If $f_{NL}=10^2$, inflation occurred around the GUT scale. | |
| dc.description | 17 pages, 1 figure; minor clarification and refs added; version for publication in Phys.Lett.B | |
| dc.identifier | https://arxiv.org/abs/0801.0467 | |
| dc.identifier | http://arxiv.org/abs/0801.0467 | |
| dc.identifier | Phys.Lett.B669:260-265,2008 | |
| dc.identifier | doi:10.1016/j.physletb.2008.10.013 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205094 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | Astrophysics | |
| dc.title | Large Non-Gaussianity Implication for Curvaton Scenario | |
| dc.type | text |