Phys. Rev. D 59, 084021 (1999) [7 pages]Illusions of general relativity in Brans-Dicke gravityReceived 18 August 1998; published 22 March 1999 Contrary to common belief, the standard tenet of Brans-Dicke theory reducing to general relativity in the ω⃗∞ limit is false when the trace of the matter energy-momentum tensor vanishes. The issue is clarified in a new approach using conformal transformations. The otherwise unaccountable limiting behavior of Brans-Dicke gravity is easily understood in terms of the conformal invariance of the theory when the sources of gravity have radiation-like properties. The rigorous computation of the asymptotic behavior of the Brans-Dicke scalar field is straightforward in this new approach. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.59.084021
DOI:
10.1103/PhysRevD.59.084021
PACS:
04.50.+h, 04.20.Jb
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