Alan Coley et al 2009 Class. Quantum Grav. 26 125011 doi:10.1088/0264-9381/26/12/125011
Alan Coley1, Sigbjørn Hervik1,2 and Nicos Pelavas1
Show affiliationsIn this paper we investigate four-dimensional Lorentzian spacetimes with constant curvature invariants (CSI spacetimes). We prove that if a four-dimensional spacetime is CSI, then either the spacetime is locally homogeneous or the spacetime is a Kundt spacetime for which there exists a frame such that the positive boost weight components of all curvature tensors vanish and the boost weight zero components are all constant. We discuss some of the properties of the Kundt–CSI spacetimes and their applications. In particular, we discuss
-symmetric spaces and degenerate Kundt–CSI spacetimes.
Issue 12 (21 June 2009)
Received 9 December 2008, in final form 29 April 2009
Published 27 May 2009
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