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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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Journal ArticleDOI

Chaos and Complexity from Quantum Neural Network: A study with Diffusion Metric in Machine Learning

TL;DR: In this article, a Parameterized Quantum Circuits (PQCs) in the hybrid quantum-classical framework is introduced as a universal function approximator to perform optimization with Stochastic Gradient Descent (SGD).
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Holographic Complexity and Thermodynamic Volume.

TL;DR: In this article, the authors study the holographic complexity conjectures for rotating black holes, uncovering a relationship between the complexity of formation and the thermodynamic volume of the black hole.
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Complexity of hyperscaling violating theories at finite cutoff

TL;DR: In this paper, the authors study the complexity of hyperscaling violating theories in the presence of a finite cutoff that, in turns, requires to obtain all counter terms needed to have finite boundary energy momentum tensor.
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Complexity growth and shock wave geometry in AdS-Maxwell-power-Yang-Mills theory.

TL;DR: In this article, the effects of non-abelian gauge fields on the holographic characteristics for instance the evolution of computational complexity are studied. And the impact of charge of the YM field on the complexity growth rate by using $complexity=action$ (CA) conjecture is investigated.
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Circuit complexity and 2D bosonisation

TL;DR: In this article, the complexity of free bosons and free fermions in 1+1 dimensions was investigated and the dependence of the complexity on the choice of the set of gates was investigated.
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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