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Shortcuts to spherically symmetric solutions: a cautionary note

S Deser1, J Franklin2 and B Tekin3

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COMMENT

Spherically symmetric solutions of generic gravitational models are optimally, and legitimately, obtained by expressing the action in terms of the surviving metric components. This shortcut is not to be overdone; however, a one-function ansatz invalidates it, as illustrated by the incorrect solutions of Wohlfarth (2004 Class. Quantum Grav. 21 1927).


PACS

04.20.Jb Exact solutions

MSC

83C15 Exact solutions

Subjects

Gravitation and cosmology

Dates

Issue 22 (21 November 2004)

Received 27 April 2004, in final form 20 September 2004

Published 29 October 2004



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