Foundations of Physics

, Volume 36, Issue 3, pp 443–463

Superluminal Signals and the Resolution of the Causal Paradox


DOI: 10.1007/s10701-005-9028-6

Cite this article as:
Selleri, F. Found Phys (2006) 36: 443. doi:10.1007/s10701-005-9028-6

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≠0. 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 (SLS) in the theory of relativity does not exist in the theory with e1=0. The irrelevance of SLS for the Einstein, Podolsky and Rosen paradox is pointed out.


clock synchronizationsuperluminal signalsLorentz ether

Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Dipartimento di Fisica, INFNUniversità di BariBariItaly