Superluminal Signals and the Resolution of the Casual Paradox

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Scientific Paper
Title Superluminal Signals and the Resolution of the Casual Paradox
Author(s) Franco Selleri
Keywords Clock synchronization, Superluminal signals, Lorentz ether
Published 2006
Journal Foundations of Physics
Volume 36
No. of pages 20
Pages 443-463

Abstract

The experimental evidence for electromagnetic signals propagating with superluminal group velocity is recalled. Transformations of space and time depending on a synchronization parameter, e1, indicate the existence of a privileged inertial system. The Lorentz transformations are obtained for a particular e1 different from zero. No standard experiment on relativity depends on e1, but if accelerations are considered only e1 = 0 remains possible. The causal paradox generated by superluminal signals in the theory of relativity does not exist in the theory with 

e1 = 0. The irrelevance of superluminal signals for the Einstein, Podolsky and Rosen paradox is pointed out.