par Faraoni, Valerio
Référence Physical Review D - Particles, Fields, Gravitation and Cosmology, 59, 8, page (1-7)
Publication Publié, 1999-04
Article révisé par les pairs
Résumé : Contrary to common belief, the standard tenet of Brans-Dicke theory reducing to general relativity in the ω→∞ 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.