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- Title
Flat space holography.
- Authors
Mann, Robert B.
- Abstract
The implementation of holography in gravitational physics has its most concrete realization in the context of the anti-de Sitter/conformal field theory (AdS/CFT) correspondence conjecture, an implication of which is that counterterms from the boundary CFT can be understood as surface terms that render the variational principle finite and well-defined for the gravity theory in the bulk. I discuss recent developments that show how such gravitational counterterms can be deployed for asymptotically flat spacetimes in any spacetime dimension d ≥ 4. These actions yield conserved quantities at spacelike infinity that agree with the usual Arnowitt–Deser–Misner results but are more general. This approach removes the need for ill-defined background subtraction methods and suggests the possibility of obtaining a dual field theory to gravity theories in asymptotically flat spacetimes.PACS Nos.: 04.20.Ha, 04.60.–m, 11.25.Tq
- Subjects
HOLOGRAPHY; FIELD theory (Physics); GRAVITY; BOUNDARY value problems; PHYSICS
- Publication
Canadian Journal of Physics, 2008, Vol 86, Issue 4, p563
- ISSN
0008-4204
- Publication type
Article
- DOI
10.1139/P07-188