Phys. Rev. D 76, 064023 (2007) [10 pages]A global picture of quantum de Sitter spaceReceived 12 June 2007; published 24 September 2007 Perturbative gravity about a de Sitter background motivates a global picture of quantum dynamics in “eternal de Sitter space,” the theory of states which are asymptotically de Sitter to both future and past. Eternal de Sitter physics is described by a finite-dimensional Hilbert space in which each state is precisely invariant under the full de Sitter group. This resolves a previously noted tension between de Sitter symmetry and finite entropy. Observables, implications for Boltzmann brains, and Poincaré recurrences are briefly discussed. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.76.064023
DOI:
10.1103/PhysRevD.76.064023
PACS:
04.60.Ds, 98.80.Qc
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