A direct kinematical derivation of the relativistic Sagnac effect for light or matter beams

Abstract

The Sagnac time delay and the corresponding Sagnac phase shift, for relativistic matter and electromagnetic beams counter-propagating in a rotating interferometer, are deduced on the ground of relativistic kinematics. This purely kinematical approach allows to explain the ''universality'' of the effect, namely the fact that the Sagnac time difference does not depend on the physical nature of the interfering beams. The only prime requirement is that the counter-propagating beams have the same velocity with respect to any Einstein synchronized local co-moving inertial frame.

10 pages, 1 EPS figure, to appear in General Relativity and Gravitation

References in corpus (1)

• Simultaneity and generalized connections in general relativity

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