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Gravitational scalar field coupled directly to the Maxwell field and its effect to solar-system experiments

Yasunori Fujii·Misao Sasaki
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Abstract

The effect of the massless gravitational scalar field assumed to couple directly to the Maxwell field to the solar-system experiments is estimated. We start with discussing the theoretical significances of this coupling. Rather disappointingly, however, we find that the scalar-field parameters never affect the observation in the limit of the geometric optics, indicating a marked difference from the well-known contribution through the spacetime metric.

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Yasunori Fujii, Misao Sasaki. 2006-09-09. Gravitational scalar field coupled directly to the Maxwell field and its effect to solar-system experiments. https://doi.org/10.1103/physrevd.75.064028

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