On the definition of cylindrical symmetry

Abstract

The standard definition of cylindrical symmetry in General Relativity is reviewed. Taking the view that axial symmetry is an essential pre-requisite for cylindrical symmetry, it is argued that the requirement of orthogonal transitivity of the isometry group should be dropped, this leading to a new, more general definition of cylindrical symmetry. Stationarity and staticity in cylindrically symmetric spacetimes are then defined, and these issues are analysed in connection with orthogonal transitivity, thus proving some new results on the structure of the isometry group for this class of spacetimes.

12 pages, LaTeX, no figures

References in corpus (3)

• Axial symmetry and conformal Killing vectors
• Space-times admitting a three-dimensional conformal group
• G_2 Perfect-Fluid Cosmologies with a proper conformal Killing vector

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