Reconstructing spacetime from the hologram, even in the classical limit, requires physics beyond the Planck scale

David Berenstein; Alexandra Miller

doi:10.1142/s0218271816440120

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arXiv · 1605.05288

Reconstructing spacetime from the hologram, even in the classical limit, requires physics beyond the Planck scale

David Berenstein·Alexandra Miller

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Abstract

We argue in this essay that for classical configurations of gravity in the AdS/CFT setup, it is in general impossible to reconstruct the bulk geometry from the leading asymptotic behavior of the classical fields in gravity alone. This is possible sufficiently near the vacuum, but not more generally. We argue this by using a counter-example that utilizes the supersymmetric geometries constructed by Lin, Lunin, and Maldacena. In the dual quantum field theory, the additional data required to complete the geometry is encoded in modes that near the vacuum geometry lie beyond the Planck scale.

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David Berenstein, Alexandra Miller. 2016-05-17. Reconstructing spacetime from the hologram, even in the classical limit, requires physics beyond the Planck scale. https://doi.org/10.1142/s0218271816440120

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