Null Result for the Violation of Equivalence Principle with Free-Fall Rotating Gyroscopes

Details Null Result for the Violation of Equivalence Principle with Free-Fall Rotating Gyroscopes Null Result for the Violation of Equivalence Principle with Free-Fall Rotating Gyroscopes

2001-11-21

arxiv.org/abs/gr-qc/0111069v1

Phys.Rev. D65 (2002) 042005

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

REVTeX 3.0, 7 pages with 4 Postscript figures

Scientific paper

10.1103/PhysRevD.65.042005

The differential acceleration between a rotating mechanical gyroscope and a non-rotating one is directly measured by using a double free-fall interferometer, and no apparent differential acceleration has been observed at the relative level of 2x10{-6}. It means that the equivalence principle is still valid for rotating extended bodies, i.e., the spin-gravity interaction between the extended bodies has not been observed at this level. Also, to the limit of our experimental sensitivity, there is no observed asymmetrical effect or anti-gravity of the rotating gyroscopes as reported by hayasaka et al.

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