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Foundations of Physics

, Volume 41, Issue 8, pp 1375–1397 | Cite as

Spatial Directions, Anisotropy and Special Relativity

  • Marco Mamone CapriaEmail author
Article

Abstract

The concept of an objective spatial direction in special relativity is investigated and theories assuming light-speed isotropy while accepting the existence of a privileged spatial direction are classified, including so-called very special relativity. A natural generalization of the proper time principle is introduced which makes it possible to devise non-optical experimental tests of spatial isotropy. Several common misunderstandings in the relativistic literature concerning the role of spatial isotropy are clarified.

Keywords

Relativity Very special relativity Spatial isotropy Differential aging Reciprocity 

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Dipartimento di MatematicaPerugiaItaly

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