Abstract
Concepts of high precision studies of the one-way speed of light anisotropy are discussed. The high energy particle beam allows measurement of a one-way speed of light anisotropy (SOLA) via analysis of the beam momentum variation with sidereal phase without the use of synchronized clocks. High precision beam position monitors could provide accurate monitoring of the beam orbit and determination of the particle beam momentum with relative accuracy on the level of $10^{-10}$, which corresponds to a limit on SOLA of $10^{-18}$ with existing storage rings. A few additional versions of the experiment are also presented.
Highlights
A constant and isotropic speed of light is a key postulate of the special relativity theory, SR, as formulated by A
Michelson [2] developed an extremely sensitive method of measurement of the anisotropy of the two-way speed of light, c2, which is an average of the speeds in two opposite directions
The one-way speed of light anisotropy tells us about the directional variation of a difference in the speed of light in two opposite directions
Summary
A constant and isotropic speed of light is a key postulate of the special relativity theory, SR, as formulated by A. Michelson [2] developed an extremely sensitive method of measurement of the anisotropy of the two-way speed of light, c2, which is an average of the speeds in two opposite directions. A modern experiment of this type [3] reached an extremely high precision, 1013 times higher than was obtained in the Michelson-Morley experiment [4], and found that c2 is isotropic at least to the level of 10−18. The one-way speed of light anisotropy tells us about the directional variation of a difference in the speed of light in two opposite directions. The one-way speed of light, c1, could be measured by using two synchronized clocks. Variation of the speed of light could be an indication of a quantum gravity effect in the laboratory
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