Modern Physics/Brans-Dicke theory

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In theoretical physics, the Brans-Dicke theory of gravitation (sometimes called the Jordan-Brans-Dicke theory) is a minority viewpoint in physics. The Brans-Dicke theory is a well-known competitor of Einstein's more popular theory of general relativity. The theory was developed by Robert H. Dicke and Carl H. Brans building upon, among others, the earlier work of Pascual Jordan. It is an example of a scalar-tensor theory, a gravitational theory in which the gravitational interaction is mediated by a scalar field as well as the tensor field of general relativity.

At present, both Brans-Dicke theory and general relativity are generally held to be in agreement with observation, although the experiments of the golden age of general relativity have considerably constrained the allowed parameters of Brans-Dicke theory.