Authors
Date (dd-mm-yyyy)
2016
Title
Precursors and BRST Symmetry
Journal
The Journal of High Energy Physics
Publication Year
2016
Document type
Article
Faculty
Faculty of Science (FNWI)
Institute
Institute for Theoretical Physics Amsterdam (ITFA)
Abstract
In the AdS/CFT correspondence, bulk information appears to be encoded in the CFT in a redundant way. A local bulk field corresponds to many different non-local CFT operators (precursors). We recast this ambiguity in the language of BRST symmetry, and propose that in the large N limit, the difference between two precursors is a BRST exact and ghost-free term. Using the BRST formalism and working in a simple model with global symmetries, we re-derive a precursor ambiguity appearing in earlier work. Finally, we show within this model that this BRST ambiguity has the right number of parameters to explain the freedom to localize precursors within the boundary of an entanglement wedge order by order in the large N expansion
Permalink
https://hdl.handle.net/11245.1/cde8a7e8-1e32-479e-9563-b5a9b36b15f3