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Open AccessJournal ArticleDOI

Holographic Complexity Equals Bulk Action

TLDR
The hypothesis that black holes are the fastest computers in nature is discussed and the conjecture that the quantum complexity of a holographic state is dual to the action of a certain spacetime region that is called a Wheeler-DeWitt patch is illustrated.
Abstract
We conjecture that the quantum complexity of a holographic state is dual to the action of a certain spacetime region that we call a Wheeler-DeWitt patch. We illustrate and test the conjecture in the context of neutral, charged, and rotating black holes in anti-de Sitter spacetime, as well as black holes perturbed with static shells and with shock waves. This conjecture evolved from a previous conjecture that complexity is dual to spatial volume, but appears to be a major improvement over the original. In light of our results, we discuss the hypothesis that black holes are the fastest computers in nature.

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Citations
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Black holes and the limits of quantum information processing

TL;DR: The densest memories and the fastest processors imaginable on computers located billions of light-years away are demonstrated.
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Circuit Complexity of Knot States in Chern-Simons theory

TL;DR: In this paper, an upper bound on the circuit complexity of quantum states in $3d$ Chern-Simons theory corresponding to certain classes of knots has been derived, and the results are generalized for a family of multi-component links that are obtained by hopf-linking different torus knots.
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Python’s lunches in Jackiw-Teitelboim gravity with matter

TL;DR: In this article , the authors studied Python's lunch geometries in the two-dimensional Jackiw-Teitelboim model coupled with a massless scalar field in the semiclassical limit, and they showed that all extrema including the minimal quantum extremal surface, bulges and appetizers lie inside the horizon.
Posted Content

Note on Stability and Holographic Renyi Entropy in New Hyperbolic AdS Black Holes

TL;DR: In this paper, the potential parameters affect the stability of hyperbolic black holes in several specific examples are shown and generic value of potential parameters needs further study to see how the transition happens.
References
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Journal ArticleDOI

The world as a hologram

TL;DR: In this article, the effects of particle growth with momentum on information spreading near black hole horizons were investigated. But the authors only considered the earliest times of the propagation of information near the horizon.
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A bound on chaos

TL;DR: In this paper, a sharp bound on the rate of growth of chaos in thermal quantum systems with a large number of degrees of freedom is given, based on plausible physical assumptions, establishing this conjecture.
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Black holes and the butterfly effect

TL;DR: In this article, the authors used holography to study sensitive dependence on initial conditions in strongly coupled field theories and showed that the effect of the early infalling quanta relative to the t = 0 slice creates a shock wave that destroys the local two-sided correlations present in the unperturbed state.
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The String landscape, black holes and gravity as the weakest force

TL;DR: In this paper, an upper bound on the strength of gravity relative to gauge forces in quantum gravity was given, motivated by arguments involving holography and absence of remnants, the stability of black holes as well as the non-existence of global symmetries in string theory.

Dimensional reduction in quantum gravity

TL;DR: In this article, Abdus Salam argued that the observable degrees of freedom can best be described as if they were Boolean variables defined on a two-dimensional lattice, evolving with time.
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