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arXiv · 1503.04882

A Rastall Scalar-Tensor theory

T. Caramês·M. H. Daouda J. C. Fabris·A. M. Oliveira·O. F. Piattella·V. Strokov
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Abstract

We formulate a theory combining the principles of a scalar-tensor gravity and the Rastall proposal of a violation of the usual conservation laws. In the resulting Brans-Dicke-Rastall (BDR) theory the only exact, static, spherically symmetric solution is a Robinson-Bertotti type solution besides the trivial Schwarzschild one. The PPN constraints can be completely satisfied for some values of the free parameters.The cosmological solutions display, among others, a decelerate-accelerate transition in the matter dominated phase.

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T. Caramês, M. H. Daouda J. C. Fabris, A. M. Oliveira, O. F. Piattella, V. Strokov. 2015-03-17. A Rastall Scalar-Tensor theory. https://arxiv.org/abs/1503.04882

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