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2020

Inside the Hologram: Reconstructing the bulk observer's experience

Jafferis, Daniel Louis, Lamprou, Lampros

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We develop a holographic framework for describing the experience of bulk observers in AdS/CFT, that allows us to compute the proper time and energy distribution measured along any bulk worldline.

Our method is formulated directly in the CFT language and is universal: It does not require knowledge of the bulk geometry as an input.
When used to propagate operators along the worldline of an observer falling into an eternal black hole, our proposal resolves a conceptual puzzle raised by Marolf and Wall.
Notably, the prescription does not rely on an external dynamical Hamiltonian or the AdS boundary conditions and is, therefore, outlining a general framework for the emergence of time.

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