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APS » Journals » Phys. Rev. Lett. » Volume 70 » Issue 15
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Phys. Rev. Lett. 70, 2217–2219 (1993)

General relativity as a cosmological attractor of tensor-scalar theories

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Thibault Damour
Institut des Hautes Etudes Scientifiques, 91440 Bures-sur-Yvette France
Département d’Astrophysique Relativiste et de Cosmologie, Observatoire de Paris, Centre National de la Recherche Scientifique, 92195 Meudon, France

Kenneth Nordtvedt
Institut des Hautes Etudes Scientifiques, 91440 Bures-sur-Yvette, France
Department of Physics, Montana State University, Bozeman, Montana 59717

Received 17 December 1992; published in the issue dated 12 April 1993

Tensor-scalar theories of gravity are shown to generically contain an attractor mechanism toward general relativity, with the redshift at the beginning of the matter-dominated era providing the measure for the present level of deviation from general relativity. Quantitative estimates for the post-Newtonian parameters γ-1, β-1, and Ġ/G are given, which give greater significance to future improvements of solar-system gravitational tests.

© 1993 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.70.2217
DOI:
10.1103/PhysRevLett.70.2217
PACS:
04.80.+z, 04.50.+h, 98.80.Cq, 98.80.Hw
 
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