PIRSA:12050004 Scientific Series Cosmology

DOI10.48660/12050004

Series: Cosmology and Gravitation

Hertog, T. (2012). Accelerated Expansion and AdS/CFT. Perimeter Institute. https://pirsa.org/12050004

Hertog, Thomas. Accelerated Expansion and AdS/CFT. Perimeter Institute, May. 01, 2012, https://pirsa.org/12050004 

@misc{ pirsa_PIRSA:12050004,
  doi = {10.48660/12050004},
  url = {https://pirsa.org/12050004},
  author = {Hertog, Thomas},
  keywords = {Cosmology},
  language = {en},
  title = {Accelerated Expansion and AdS/CFT},
  publisher = {Perimeter Institute},
  year = {2012},
  month = {may},
  note = {PIRSA:12050004 see, \url{https://pirsa.org}}
}

Abstract

We review the notion of a quantum state of the universe and its role in fundamental cosmology. Then we discuss recent work which points towards a profound connection, at the level of the quantum state, between (asymptotic) Euclidean AdS spaces and Lorentzian de Sitter spaces. This gives a new framework in which (a mild generalization of) AdS/CFT can be applied to inflationary cosmology.   For the specific case of the Hartle-Hawking no-boundary quantum state the ADS/ de Sitter connection yields a natural proposal for a more precise `dual' formulation of the wave function, in terms of field theories on the future de Sitter boundary that are certain relevant deformations of the CFTs that occur in AdS/CFT.

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