Equivalence principle and experimental tests of gravitational spin effects

Abstract

We study the possibility of experimental testing the manifestations of equivalence principle in spin-gravity interactions. We reconsider the earlier experimental data and get the first experimental bound on anomalous gravitomagnetic moment. The spin coupling to the Earth's rotation may also be explored at the extensions of neutron EDM and g-2 experiments. The spin coupling to the terrestrial gravity produces a considerable effect which may be discovered at the planned deuteron EDM experiment. The Earth's rotation should also be taken into account in optical experiments on a search for axionlike particles.

arXiv comment12 pages, version to appear in Physical Review D

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• Validation of the Eriksen Method of the Exact Foldy-Wouthuysen Representation
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• From Dirac theories in curved space-times to a Variation of Dirac's large-number hypothesis
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• Fermions with Electric Dipole Moment in curved spacetime
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• Clarification on theoretical predictions for general relativistic effects in frozen spin storage rings
• Nonvanishing magnetic field in pure electrostatic systems at rest in the curved space-time of Earth