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artículo con referato
"Cylindrical Sources in Full Einstein and Brans-Dicke Gravity"
A. Arazi and C. Simeone
Gen. Relat. Gravit. 32(12) (2000) 2259-2268
It was shown by Hiscock that the energy-momentum tensor commonly used to model local cosmic strings in linearized Einstein gravity can be extended and used in the full theory, obtaining a metric in the exterior of the source with the same deficit angle. Here we show that this tensor is an exception within a family for which a static solution does not exist in full Einstein nor in Brans-Dicke gravity.
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