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Scaling solutions in general nonminimal coupling theories
Open accessAbstract
A class of generalized nonminimal 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.
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Cites
Cosmological consequences of a rolling homogeneous scalar field
Ratra, B., & Peebles, P. J. E. (1988) · Physical Review D · doi:10.1103/physrevd.37.3406 · Cited by 4,310
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THE CASE FOR A POSITIVE COSMOLOGICAL Λ-TERM
SAHNI, V., & STAROBINSKY, A. (2000) · International Journal of Modern Physics D · doi:10.1142/s0218271800000542 · Cited by 2,767
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Reconstruction of a Scalar-Tensor Theory of Gravity in an Accelerating Universe
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Metadata
- Authors
- Amendola, L.
- Venue
- Physical Review D
- Publisher
- American Physical Society (APS)
- Published
- 1999-06-29
- Volume
- 60
- Issue
- 4
- ISSN
- 0556-2821 (ISSN-L)
- 1089-4918
- OpenAlex
- W1982583605
- Cited by
- 618
- References
- 1
- FWCI
- 14.62
- Type
- journal article
- Language
- en
- Open access
- green
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