Looking at Shadows of Entanglement Wedges

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We present a new method of deriving shapes of entanglement wedges directly from CFT calculations.

• We point out that a reduced density matrix in holographic CFTs possesses a sharp wedge structure such that inside the wedge we can distinguish two local excitations, while outside we cannot.
• We can determine this wedge, which we call a CFT wedge, by computing a distinguishability measure.
• We find that CFT wedges defined by the fidelity or Bures distance as a distinguishability measure, coincide perfectly with shadows of entanglement wedges in AdS/CFT.