All the Stationary Vacuum States of De Sitter Space
classification
✦ hep-th
gr-qc
keywords
sitterspaceadmitsobserver-dependentobtainrotatingstationaryvacua
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We obtain all the stationary vacua of de Sitter space by classifying the inequivalent timelike isometries of the de Sitter group. Besides the static vacuum, de Sitter space also admits a family of rotating vacua, which we use to obtain Kerr-de Sitter solutions in various dimensions. By writing the metric in a coordinate system adapted to the rotating Hamiltonian, we show that empty de Sitter space admits not only an observer-dependent horizon but also an observer-dependent ergosphere.
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