Abstract
We examine the quantum null energy condition (QNEC) for a -dimensional conformal field theory (CFT) at strong coupling in the background of a wormhole spacetime by employing the correspondence. First, we numerically construct a novel -dimensional vacuum AdS black hole solution with nontrivial topology, which is dual to a wormhole geometry connecting two flat universes. Although the bulk null energy condition (NEC) is not violated, the NEC for the holographic stress-energy tensor is violated near the wormhole throat. Next, we investigate the entanglement entropy for a half-space anchored to the boundary wormhole throat. We propose a natural prescription for regularizing the IR divergent part of the entanglement entropy and show that the QNEC is violated at the throat. This is the first counterexample to the QNEC, indicating that IR effects are crucial.
- Received 28 August 2018
- Corrected 24 January 2019
DOI:https://doi.org/10.1103/PhysRevD.99.026004
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society
Physics Subject Headings (PhySH)
Corrections
24 January 2019
Correction: The “Note added” formatting needed clarification and has been reset.