Abstract
It is pointed out that the field equations in one of Barber's two “self-creation” cosmologies are not only in disagreement with experiment, but are actually inconsistent, in general. The construction of consistent general relativistic field equations involving field variables, such asϕ, without invoking Lagrangian techniques, requires careful checking that sufficient functional freedom has been provided so as to produce a consistent set of equations.
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References
Barber, G. A. (1982).Gen. Rel. and Grav.,14, 117.
Brans, C., and Dicke, R. H. (1961).Phys. Rev.,124, 925.
Weinberg, S. (1972).Gravitation and Cosmology (John Wiley & Sons, New York).
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Brans, C.H. Consistency of field equations in “Self-Creation” cosmologies. Gen Relat Gravit 19, 949–952 (1987). https://doi.org/10.1007/BF00759299
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DOI: https://doi.org/10.1007/BF00759299