A modular toolkit for bulk reconstruction

Thomas Faulkner, Min Li, Huajia Wang

Research output: Contribution to journalArticlepeer-review


We introduce new tools for studying modular flow in AdS/CFT. These tools allow us to efficiently extract bulk information related to causality and locality. For example, we discuss the relation between analyticity in modular time and entanglement wedge nesting which can then be used to extract the location of the Ryu-Takayanagi (RT) surface directly from the boundary theory. Probing the RT surface close to the boundary our results reduce to the recent proof of the Quantum Null Energy Condition. We focus on heavy probe operators whose correlation functions are determined by spacelike geodesics. These geodesics interplay with the RT surface via a set of rules that we conjecture and give evidence for using the replica trick.

Original languageEnglish (US)
Article number119
JournalJournal of High Energy Physics
Issue number4
StatePublished - Apr 1 2019


  • AdS-CFT Correspondence
  • Gauge-gravity correspondence

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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