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On the area of the symmetry orbits in $T^2$ symmetric spacetimes

James Isenberg·Marsha Weaver
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Abstract

We obtain a global existence result for the Einstein equations. We show that in the maximal Cauchy development of vacuum $T^2$ symmetric initial data with nonvanishing twist constant, except for the special case of flat Kasner initial data, the area of the $T^2$ group orbits takes on all positive values. This result shows that the areal time coordinate $R$ which covers these spacetimes runs from zero to infinity, with the singularity occurring at R=0.

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James Isenberg, Marsha Weaver. 2004-02-03. On the area of the symmetry orbits in $T^2$ symmetric spacetimes. https://doi.org/10.1088/0264-9381%2F20%2F16%2F316

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