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within Astronomy, Observations and Techniques Remove this filter A. Barros Remove this filter

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  1. No Access

    Article

    Brans-dicke cosmology and the cosmological constant: The spectrum of vacuum solutions

    We study the Brans-Dicke vacuum field equations in the presence of a cosmological term A. Considering a Friedmann-Robertson-Walker metric with flat spatial sections (k=0), we provide a qualitative analysis of the...

    C. Romero, A. Barros in Astrophysics and Space Science (1992)

  2. No Access

    Article

    The equivalence between General Relativity and scalar-tensor theories of gravity

    The equivalence between General Relativity and scalar-tensor theories is discussed. Vacuum solutions of the Brans-Dicke theory of gravity are shown to behave ambiguously whenever attempts are made to interpret...

    C. Romero, A. Barros in Astrophysics and Space Science (1993)