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

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.

arXiv commentLaTex 10 pages

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Cited by in corpus (4)

• Inflation and late-time cosmic acceleration in non-minimal Maxwell-$F(R)$ gravity and the generation of large-scale magnetic fields
• Field-theoretical formulations of MOND-like gravity
• Inflationary cosmology and the late-time accelerated expansion of the universe in non-minimal Yang-Mills-$F(R)$ gravity and non-minimal vector-$F(R)$ gravity
• Possible time-variability of the fine-structure constant expected from the accelerating universe