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arXiv · 0906.1901

Scalar field mass in generalized gravity

Valerio Faraoni
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Abstract

The notions of mass and range of a Brans-Dicke-like scalar field in scalar-tensor and f(R) gravity are subject to an ambiguity that hides a potential trap. We spell out this ambiguity and identify a physically meaningful and practical definition for these quantities. This is relevant when giving a mass to this scalar in order to circumvent experimental limits on the PPN parameters coming from Solar System experiments.

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Valerio Faraoni. 2009-06-19. Scalar field mass in generalized gravity. https://doi.org/10.1088/0264-9381%2F26%2F14%2F145014

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