PIRSA:11060053 Conference Cosmology

DOI10.48660/11060053

Conference/School: Holographic Cosmology v2.0 - 2011

Horn, B. (2011). Micromanaging and Accounting in de Sitter Holography. Perimeter Institute. https://pirsa.org/11060053

Horn, Bart. Micromanaging and Accounting in de Sitter Holography. Perimeter Institute, Jun. 23, 2011, https://pirsa.org/11060053 

@misc{ pirsa_PIRSA:11060053,
  doi = {10.48660/11060053},
  url = {https://pirsa.org/11060053},
  author = {Horn, Bart},
  keywords = {Cosmology},
  language = {en},
  title = {Micromanaging and Accounting in de Sitter Holography},
  publisher = {Perimeter Institute},
  year = {2011},
  month = {jun},
  note = {PIRSA:11060053 see, \url{https://pirsa.org}}
}

Abstract

I will discuss recent work engineering "semi-holographic" constructions of de Sitter space in string theory, using elliptic fibrations and orientifolds to uplift known Freund-Rubin compactifications. The dual brane construction is compact and provides a microscopic realization of the dS/dS correspondence of Alishahiha et al., realizing de Sitter space in d dimensions as a warped compactification down to d-1 dimensional de Sitter space coupled to a pair of large N matter sectors. This provides a parametric microscopic accounting of the Gibbons-Hawking entropy. I will discuss an explicit example in three dimensions as well as ongoing work in four dimensions.

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