Quantum extremal islands made easy. Part III. Complexity on the brane

Oct 30, 2020
52 pages
Published in:
  • JHEP 02 (2021) 173
  • Published: Feb 19, 2021
e-Print:

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Abstract: (Springer)
We examine holographic complexity in the doubly holographic model introduced in [1, 2] to study quantum extremal islands. We focus on the holographic complexity=volume (CV) proposal for boundary subregions in the island phase. Exploiting the Fefferman-Graham expansion of the metric and other geometric quantities near the brane, we derive the leading contributions to the complexity and interpret these in terms of the generalized volume of the island derived from the induced higher-curvature gravity action on the brane. Motivated by these results, we propose a generalization of the CV proposal for higher curvature theories of gravity. Further, we provide two consistency checks of our proposal by studying Gauss-Bonnet gravity and f(ℛ) gravity in the bulk.
Note:
  • 45+5pages, 5 figures
  • AdS-CFT Correspondence
  • Classical Theories of Gravity
  • gravitation: action
  • gravitation: f(R)
  • curvature: high
  • membrane model
  • holography
  • effect: quantum
  • space-time: expansion
  • geometry