Holographic de Sitter Universe

Details Holographic de Sitter Universe Holographic de Sitter Universe

2011-04-30

arxiv.org/abs/1105.0038v3

JHEP 1107:053,2011

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, minor modifications and more references added

Scientific paper

10.1007/JHEP07(2011)053

We propose to embed de Sitter space into five dimensional anti-de Sitter space to compute some physical quantities of interest, using the AdS/CFT correspondence. The static de Sitter can be considered as the conformal structure of the boundary of the hyperbolic AdS5 with a horizon, thus energy as well as entropy can be computed. The global dS can be embedded into a half-global AdS5, and the dS entropy can be regarded as entanglement entropy in this case. Finally, the inflationary dS can also be regarded as the boundary of AdS5, and this can be extended to include general cosmology with a positive cosmological constant, however at the price of introducing a naked null singularity in the bulk unless the cosmology is pure de Sitter space.

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