2011/07/31 by Sugumi Kanno, Misao Sasaki, Jiro Soda · 1 citation
Physics and Astronomy · #Anti-de Sitter space #Art #Astronomy #Black Holes and Theoretical Physics #Classical mechanics #Cosmology and Gravitation Theories #De Sitter universe #Dual (grammatical number) #Galaxies: Formation, Evolution, Phenomena #Holography #Literature #Optics #Physics #Theoretical physics #Universe #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1016/j.nuclphysb.2011.10.020
published as Nucl.Phys. B855 (2012) 361-387 · 21 pages, 8 figures, reference added, conclusion section expanded, published version
openalex publication_date 2011/10/25 · arxiv created 2011/11/03 · arxiv updated 2014/12/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the proposal that a de Sitter (dS) universe with an Anti-de Sitter (AdS) bubble can be replaced by a dS universe with a boundary CFT. To explore this duality, we consider incident gravitons coming from the dS universe through the bubble wall into the AdS bubble in the original picture. In the dual picture, this process has to be identified with the absorption of gravitons by CFT matter. We have obtained a general formula for the absorption probability in general d+1 spacetime dimensions. The result shows the different behavior depending on whether spacetime dimensions are even or odd. We find that the absorption process of gravitons from the dS universe by CFT matter is controlled by localized gravitons (massive bound state modes in the Kaluza-Klein decomposition) in the dS universe. The absorption probability is determined by the effective degrees of freedom of the CFT matter and the effective gravitational coupling constant which encodes information of localized gravitons. We speculate that the dual of d+1 dimensional dS universe with an AdS bubble is also dual to a d dimensional dS universe with CFT matter.