A reciprocal Wald theorem for varying gravitational function

  • Stéphane Fay


We study when a cosmological constant is a natural issue if it is mimicked by the potential of a massive Hyperextended Scalar Tensor theory with a perfect fluid for Bianchi type I and V models. We then deduce a reciprocal Wald theorem giving the conditions such that the potential tends to a non vanishing constant when the gravitational function varies. We also get the conditions allowing the potentiel to vanish or diverge.

PACS: 04.50.+h – 98.80.Cq – 11.27.+d


Cosmological Constant Versus Model Perfect Fluid Bianchi Type Scalar Tensor Theory 
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Copyright information

© Springer-Verlag, Società Italiana di Fisica 2003

Authors and Affiliations

  • Stéphane Fay
    • 1
  1. 1.Laboratoire Univers et Théories, CNRS-FRE 2462, Observatoire de Paris, F-92195 Meudon Cedex, France, 

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