Possible evidence from laboratory measurements for a latitude and longitude dependence of G

Abstract

Stability arguments suggest that the Kaluza-Klein (KK) internal scalar field, $\Phi$, should be coupled to some external fields. An external bulk real scalar field, $\psi$, minimally coupled to gravity is proved to be satisfactory. At low temperature, the coupling of $\psi$ to the electromagnetic (EM) field allows $\Phi$ to be much stronger coupled to the EM field than in the genuine five dimensional KK theory. It is shown that the coupling of $\Phi$ to the geomagnetic field may explain the observed dispersion in laboratory measurements of the (effective) gravitational constant. The analysis takes into account the spatial variations of the geomagnetic field. Except the high PTB value, the predictions are found in good agreement with all of the experimental data.

arXiv commentLatex, 20 pages with 2 Postscript figures

Cited by in corpus (7)

• A review of conventional explanations of anomalous observations during solar eclipses
• Possible time variations of G in scalar-tensor theories of gravity
• Scalar-tensor theories and asymmetric resonant cavities
• Evidence for Torque Caused by a Magnetic Impulse on a Nonmagnetic Torsion Pendulum
• Revaluation of Mbelek and Lachièze-Rey scalar tensor theory of gravitation to explain the measured forces in asymmetric resonant cavities
• Possible measurable effects of light propagating in electromagnetized vacuum, as predicted by a scalar tensor theory of gravitation
• Constraining a possible dependence of Newton's constant on the Earth's magnetic field