ar X iv : g r - qc / 0 30 20 02 v 2 4 F eb 2 00 3 A numerical analysis for G ( t ) in the Scalar - tensor theory
نویسنده
چکیده
We studied the variation of Newton ́s gravitational constant G, using the experimental data and the scalar-tensor theory for gravitation. We search for a fine tunning to match the datas and find possible scenarios for the history of this constant.
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Lσ = A(φ)R −B(φ)Trg(φh) = A(φ)R −B(φ)ghab∂μφ∂νφ, (2) where A,B are arbitrary C∞ functions of φ. We see that S has arbitrary couplings to the curvature and kinetic terms and we call it the scalar-tensor σ-model or, the scalar-tensor wavemap action. Such a theory includes as special cases many of the scalar field models considered in the literature (e.g.,). Under compact variations of the familie...
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