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Non-expanding Plebanski-Demianski space-times

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arxiv 1804.01519 v1 pith:QQQ3NXE4 submitted 2018-04-04 gr-qc hep-th

Non-expanding Plebanski-Demianski space-times

classification gr-qc hep-th
keywords space-timesfamilyfieldgravitationalnon-expandingplebanski-demianskipossiblesource
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The aim of this work is to describe the complete family of non-expanding Plebanski-Demianski type D space-times and to present their possible interpretation. We explicitly express the most general form of such (electro)vacuum solutions with any cosmological constant, and we investigate the geometrical and physical meaning of the seven parameters they contain. We present various metric forms, and by analyzing the corresponding coordinates in the weak-field limit we elucidate the global structure of these space-times, such as the character of possible singularities. We also demonstrate that members of this family can be understood as generalizations of classic B-metrics. In particular, the BI-metric represents an external gravitational field of a tachyonic (superluminal) source, complementary to the AI-metric which is the well-known Schwarzschild solution for exact gravitational field of a static (standing) source.

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