Abstract
A class of generalized non-minimal coupling theories is investigated, in search of scaling attractors able to provide an accelerated expansion at the present time. Solutions are found in the strong coupling regime and when the coupling function and the potential verify a simple relation. In such cases, which include power law and exponential functions, the dynamics is independent of the exact form of the coupling and the potential. The constraint from the time variability of $G$, however, limits the fraction of energy in the scalar field to less than 4% of the total energy density, and excludes accelerated solutions at the present.
Keywords
ScalingStatistical physicsCoupling (piping)Exponential functionPhysicsScalar (mathematics)AttractorConstraint (computer-aided design)Classical mechanicsMathematical physicsMathematical analysisMathematicsGeometry
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Publication Info
- Year
- 1999
- Type
- article
- Volume
- 60
- Issue
- 4
- Citations
- 581
- Access
- Closed
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Cite This
Luca Amendola
(1999).
Scaling solutions in general nonminimal coupling theories.
Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields
, 60
(4)
.
https://doi.org/10.1103/physrevd.60.043501
Identifiers
- DOI
- 10.1103/physrevd.60.043501