Growing neutrinos and cosmological selection
| dc.creator | Wetterich, C. | |
| dc.date | 2007-06-29 | |
| dc.date | 2007-08-01 | |
| dc.date.accessioned | 2026-07-07T11:17:21Z | |
| dc.date.available | 2026-07-07T11:17:21Z | |
| dc.description | The time evolution of a cosmological scalar field can be stopped by an increasing mass of the neutrinos. This leads to a transition from a cosmological scaling solution with dynamical dark energy at early time to a cosmological constant dominated universe at late time. The trigger for the transition is set at the time when the neutrinos become non-relativistic. The characteristic mass scale for dark energy is thus related to the neutrino mass, the only known particle physics scale in its vicinity. This explains the ``why now problem'' for dark energy. We present a particle physics realization of this ``growing matter'' scenario. It is based on the very slowly varying mass of a superheavy scalar triplet field whose expectation value dominates the light neutrino masses. | |
| dc.description | new material on time varying constants, new figures, 8 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/0706.4427 | |
| dc.identifier | http://arxiv.org/abs/0706.4427 | |
| dc.identifier | Phys.Lett.B655:201-208,2007 | |
| dc.identifier | doi:10.1016/j.physletb.2007.08.060 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/192979 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Growing neutrinos and cosmological selection | |
| dc.type | text |