Search for Frame-Dragging-Like Signals Close to Spinning Superconductors

Details Search for Frame-Dragging-Like Signals Close to Spinning Superconductors Search for Frame-Dragging-Like Signals Close to Spinning Superconductors

2007-07-25

arxiv.org/abs/0707.3806v9

Proceedings of the 2nd International Conference on Time and Matter, University of Nova Gorica Press, Nova Gorica, 2008, pp. 49

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Paper presented at the 18th International Conference on General Relativity & Gravitation, Sydney, Jul 2007 and at the Time & M

Scientific paper

High-resolution accelerometer and laser gyroscope measurements were performed in the vicinity of spinning rings at cryogenic temperatures. After passing a critical temperature, which does not coincide with the material's superconducting temperature, the angular acceleration and angular velocity applied to the rotating ring could be seen on the sensors although they are mechanically de-coupled. A parity violation was observed for the laser gyroscope measurements such that the effect was greatly pronounced in the clockwise-direction only. The experiments seem to compare well with recent independent tests obtained by the Canterbury Ring Laser Group and the Gravity-Probe B satellite. All systematic effects analyzed so far are at least 3 orders of magnitude below the observed phenomenon. The available experimental data indicates that the fields scale similar to classical frame-dragging fields. A number of theories that predicted large frame-dragging fields around spinning superconductors can be ruled out by up to 4 orders of magnitude.

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