Fundamental units of length and time

Abstract

Ideal rods and clocks are defined as an infinitesimal symmetry of the spacetime. Since no a priori geometric structure is considered, all the possible models of spacetime are obtained.

arXiv commentPart of the results of this article has been announced at the meeting ``XXIV International Workshop on the Fundamental Problems of High Energy Physics and Field Theory'' 27-29 June 2001, Protvino, Russia

References in corpus (5)

• Geometry of General Hypersurfaces in Spacetime: Junction Conditions
• Gravity and Signature Change
• Actions for signature change
• A time-space varying speed of light and the Hubble Law in static Universe
• Chaos around the superposition of a monopole and a thick disk

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• On Twisted Spacetimes: a new class of Galilean cosmological models
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• The Generalized Classical Time-Space