Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2006-07-11
Class.Quant.Grav.24:1211-1260,2007
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
50 pages, AMS-TeX; submitted to Class. Quantum Grav
Scientific paper
10.1088/0264-9381/24/5/010
The topology of the causal boundary for standard static spacetimes--spacetimes time-invariantly conformal to a metric product of the Lorentz line and a Riemannian manifold--is studied in depth. As this is given in terms of a set of real-valued functions on the Riemannian factor, one could use a function-space topology, but physical reasons recommend a chronological topology instead. The function-space topology has a simple product structure, while the chronological topology might not. This paper examines when the chronological topology coincides with the function-space topology and when it has a simple product structure. A class of standard static spacetimes is examined, all of which yield a simple product structure for the causal boundary; the conformal class of these spacetimes includes classical spacetimes such as external Schwarzschild or Reissner-Nordstrom.
Flores Jose L.
Harris Steven G.
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