Quantum Corrections in Quintessence Models
| dc.creator | Garny, Mathias | |
| dc.date | 2006-06-12 | |
| dc.date | 2006-09-12 | |
| dc.date.accessioned | 2026-07-07T07:13:25Z | |
| dc.date.available | 2026-07-07T07:13:25Z | |
| dc.description | We investigate the impact of quantum fluctuations on a light rolling quintessence field from three different sources, namely, from a coupling to the standard model and dark matter, from its self-couplings and from its coupling to gravity. We derive bounds for time-varying masses from the change of vacuum energy, finding Δm_e/m_e << 10^{-11} for the electron and Δm_p/m_p << 10^{-15} for the proton since redshift z~2, whereas the neutrino masses could change of order one. Mass-varying dark matter is also constrained. Next, the self-interactions are investigated. For inverse power law potentials, the effective potential does not become infinitely large at small field values, but saturates at a finite maximal value. We discuss implications for cosmology. Finally, we show that one-loop corrections induce non-minimal gravitational couplings involving arbitrarily high powers of the curvature scalar R, indicating that quintessence entails modified gravity effects. | |
| dc.description | 10 pages + appendix, added references | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0606120 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0606120 | |
| dc.identifier | Phys.Rev. D74 (2006) 043009 | |
| dc.identifier | doi:10.1103/PhysRevD.74.043009 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/112456 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Astrophysics | |
| dc.title | Quantum Corrections in Quintessence Models | |
| dc.type | text |