Consequences of a Cosmic Scalar with Kinetic Coupling to Curvature
| dc.creator | Daniel, Scott F. | |
| dc.creator | Caldwell, Robert R. | |
| dc.date | 2007-08-31 | |
| dc.date.accessioned | 2026-07-07T11:42:08Z | |
| dc.date.available | 2026-07-07T11:42:08Z | |
| dc.description | The classical gravitational theory of a scalar field with a gradient coupling to the Ricci tensor is examined. This is a scalar-vector-tensor gravitational theory, but in the case that the coupling is weak and the scalar evolves like a quintessence field on cosmological time scales, the field equations within the solar system are similar to a vector-tensor theory predicting tightly-constrained preferred-frame effects. In the early universe, it is shown that strong coupling effects can damp the evolution of the scalar field rolling down a potential to help drive an inflationary epoch. In the absence of a potential, the strong coupling effects drive a coasting expansion epoch which ultimately terminates in a sudden singularity. | |
| dc.description | 7 pages | |
| dc.identifier | https://arxiv.org/abs/0709.0009 | |
| dc.identifier | http://arxiv.org/abs/0709.0009 | |
| dc.identifier | Class.Quant.Grav.24:5573-5580,2007 | |
| dc.identifier | doi:10.1088/0264-9381/24/22/017 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/200779 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Consequences of a Cosmic Scalar with Kinetic Coupling to Curvature | |
| dc.type | text |