Cosmological Moduli Problem from Thermal Effects
| dc.creator | Nakayama, Kazunori | |
| dc.creator | Takahashi, Fuminobu | |
| dc.date | 2008-11-04 | |
| dc.date | 2008-12-18 | |
| dc.date.accessioned | 2026-07-07T12:30:28Z | |
| dc.date.available | 2026-07-07T12:30:28Z | |
| dc.description | We estimate the cosmological abundance of a modulus field that has dilatonic couplings to gauge fields, paying particular attention to thermal corrections on the modulus potential. We find that a certain amount of the modulus coherent oscillations is necessarily induced by a linear thermal effect. We argue that such an estimate provides the smallest possible modulus abundance for a given thermal history of the Universe. As an example we apply our results to a saxion, a bosonic supersymmetric partner of an axion, and derive a tight bound on the reheating temperature. We emphasize that the problem cannot be avoided by fine-tuning the initial deviation of the modulus field, since the minimal amount of the modulus is induced by the dynamics of the scalar potential. | |
| dc.description | 9 pages, 1 figure; to appear in PLB | |
| dc.identifier | https://arxiv.org/abs/0811.0444 | |
| dc.identifier | http://arxiv.org/abs/0811.0444 | |
| dc.identifier | Phys.Lett.B670:434-436,2009 | |
| dc.identifier | doi:10.1016/j.physletb.2008.11.046 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/216138 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Cosmological Moduli Problem from Thermal Effects | |
| dc.type | text |