Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2003-12-09
Grav.Cosmol. 10 (2004) 224
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Comments in reply to gr-qc/0312091 added, typo in Eq. (28) corrected, accepted for publication in Gravitation & Cosmology
Scientific paper
Some time ago Mbelek and Lachieze-Rey proposed that the discrepancy between the results of the various measurements of Newton's constant could be explained by introducing a gravielectric coupling between the Earth's gravitational and magnetic fields mediated by two scalar fields. A critical assessment of this model is performed. By calculating the static field configuration of the relevant scalar around a nucleus in the linearised theory and then folding this result with the mass density of the nucleus its effective gravitational mass is determined. Considering test bodies of different materials one finds violations of the weak equivalence principle for torsion-balance experiments which are four orders of magnitude beyond the current experimental limit, thus rendering the model non-viable. The method presented can be applied to generic theories with gravielectric coupling and seems to rule out in general the explanation of the discrepant measurements of Newton's constant by such couplings.
No associations
LandOfFree
Constraining a possible dependence of Newton's constant on the Earth's magnetic field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Constraining a possible dependence of Newton's constant on the Earth's magnetic field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constraining a possible dependence of Newton's constant on the Earth's magnetic field will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-41212