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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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Probing chaos by magic monotones

TL;DR: In this paper , the authors studied magic of states in the integrable and chaotic regimes of the higher-spin generalization of the Ising model through two quantities: ''mana'' and ''robustness of magic'' (RoM).
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Holographic complexity of LST and single trace $$ T\overline{T} $$, $$ J\overline{T} $$ and $$ T\overline{J} $$ deformations

TL;DR: In this paper , the volume complexity of the Lorentz-boost violation was investigated in the context of the deformation of a 2D CFT in the IR under RG via an integrable irrelevant deformation.
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On the Complexity of a Charged Quantum Oscillator.

TL;DR: In this paper, the effect of both the electric and magnetic fields on the rate of complexity growth was studied and the maximum dynamic evolution of quantum states was shown to lead to a strong bound on the speed of computation.
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Null hypersurface caustics and super-entropic black holes

TL;DR: In this paper, the authors obtained a charged, rotating and accelerating black hole solution in the f (R ) gravity and calculated thermodynamic quantities of the black hole in the slow acceleration regime.
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Towards explicit discrete holography: Aperiodic spin chains from hyperbolic tilings

- 03 Nov 2022 - 
TL;DR: In this paper , a class of boundary Hamiltonians is obtained in a natural way from regular tilings of the hyperbolic Poincar\'e disk, via an inflation rule that allows to construct the tiling using concentric layers of tiles.
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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