Cosmology with Light Axions from Technicolor
| dc.creator | Davoudiasl, Hooman | |
| dc.date | 2006-07-10 | |
| dc.date | 2006-10-26 | |
| dc.date.accessioned | 2026-07-07T11:05:13Z | |
| dc.date.available | 2026-07-07T11:05:13Z | |
| dc.description | We consider cosmological consequences of the spontaneous breaking of a global symmetry that is anomalous under technicolor interactions, leading to the emergence of a light axion-like particle. Avoiding overclosure of the universe by such axions yields the upper bound $f_a \lsim 10^{10}$ GeV on the symmetry breaking scale, corresponding to keV-scale axions. However, diffuse x-ray background data typically require larger values of $f_a$. The overclosure and x-ray bounds can be reconciled if the axion initial amplitude of oscillations $A_i \sim f_a/10$. In this case, a viable axionic dark matter candidate with a mass in the 50-100 eV range emerges. The detection of this type of dark matter may pose a challenge. | |
| dc.description | RevTex, 5 pages. Expanded and modified abstract and introduction, results and conclusions unchanged | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0607111 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0607111 | |
| dc.identifier | Phys.Lett.B646:172-176,2007 | |
| dc.identifier | doi:10.1016/j.physletb.2007.01.023 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/189138 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Astrophysics | |
| dc.title | Cosmology with Light Axions from Technicolor | |
| dc.type | text |