The uniqueness of the Bertotti-Robinson electromagnetic universe
- 1 December 1974
- journal article
- research article
- Published by AIP Publishing in Journal of Mathematical Physics
- Vol. 15 (12) , 2232-2235
- https://doi.org/10.1063/1.1666604
Abstract
By employing the spin coefficient formalism of Newman and Penrose a direct proof is obtained that the Bertotti‐Robinson electromagnetic universe is the only conformally flat solution of the source‐free Einstein‐Maxwell equations for nonnull fields.Keywords
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