Chaotic inflation, radiative corrections and precision cosmology
| dc.creator | Senoguz, V. Nefer | |
| dc.creator | Shafi, Qaisar | |
| dc.date | 2008-06-17 | |
| dc.date | 2008-09-05 | |
| dc.date.accessioned | 2026-07-07T11:51:45Z | |
| dc.date.available | 2026-07-07T11:51:45Z | |
| dc.description | We employ chaotic (phi^2 and phi^4) inflation to illustrate the important role radiative corrections can play during the inflationary phase. Yukawa interactions of phi, in particular, lead to corrections of the form -kappa phi^4 ln(phi/mu), where kappa>0 and mu is a renormalization scale. For instance, phi^4 chaotic inflation with radiative corrections looks compatible with the most recent WMAP (5 year) analysis, in sharp contrast to the tree level case. We obtain the 95% confidence limits 2.4x10^-14<~kappa<~5.7x10^-14, 0.931<~n_s<~0.958 and 0.038<~r<~0.205, where n_s and r respectively denote the scalar spectral index and scalar to tensor ratio. The limits for phi^2 inflation are kappa<~7.7x10^-15, 0.929<~n_s<~0.966 and 0.023<~r<~0.135. The next round of precision experiments should provide a more stringent test of realistic chaotic phi^2 and phi^4 inflation. | |
| dc.description | 5 pages, 4 figures, 2 tables. v2: added comments and references. v3: changed title, published version | |
| dc.identifier | https://arxiv.org/abs/0806.2798 | |
| dc.identifier | http://arxiv.org/abs/0806.2798 | |
| dc.identifier | Phys.Lett.B668:6,2008 | |
| dc.identifier | doi:10.1016/j.physletb.2008.08.017 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/204005 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Astrophysics | |
| dc.title | Chaotic inflation, radiative corrections and precision cosmology | |
| dc.type | text |