Building bulk observables in AdS/CFT
Daniel Kabat (CUNY)
The AdS/CFT correspondence relates a theory of gravity in anti-de Sitter space to a CFT on the boundary. A natural question is how local fields in AdS can be expressed in terms of the CFT. In the 1/N expansion this can be done by (i) identifying suitable building blocks - free bulk fields - in the CFT, (ii) assembling the building blocks to make interacting bulk fields. I'll present an approach where the first step is carried out using modular flow in the CFT and the second step is driven by requiring bulk causality.
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