Results 41 to 50 of about 1,085,446 (213)

Thread/State correspondence: from bit threads to qubit threads

open access: yesJournal of High Energy Physics, 2023
Starting from an interesting coincidence between the bit threads and SS (surface/state) correspondence, both of which are closely related to the holographic RT formula, we introduce a property of bit threads that has not been explicitly proposed before ...
Yi-Yu Lin, Jie-Chen Jin
doaj   +1 more source

Covariant Holographic Renormalization of Non-Conformal Field Theories [PDF]

open access: yes, 2010
We present a Covariant Holographic Renormalization (CHR) procedure of fake supergravity (sugra) systems. Holography is a strong/weak coupling duality between gravitational and gauge theories, and fake sugra is a theory of gravity coupled to scalars in ...
Van Eijk, Ernestus Petrus
core   +1 more source

The holographic principle for general backgrounds [PDF]

open access: yesClassical and Quantum Gravity, 2000
We aim to establish the holographic principle as a universal law, rather than a property only of static systems and special space-times. Our covariant formalism yields an upper bound on entropy which applies to both open and closed surfaces, independently of shape or location.
openaire   +2 more sources

Probing Spacetime Foam with Extragalactic Sources of High-Energy Photons

open access: yesUniverse, 2022
Quantum fluctuations can endow spacetime with a foamy structure. In this review article, we discuss our various proposals to observationally constrain models of spacetime foam.
Y. Jack Ng, Eric S. Perlman
doaj   +1 more source

Bekenstein Bound and Non-Commutative Canonical Variables

open access: yesUniverse, 2022
A universal upper limit on the entropy contained in a localized quantum system of a given size and total energy is expressed by the so-called Bekenstein bound. In a previous paper [Buoninfante, L. et al.
Fabio Scardigli
doaj   +1 more source

Holographic consequences of a no transmission principle

open access: yesPhysical Review D, 2016
Two quantum field theories whose Hilbert spaces do not overlap cannot transmit a signal to one another. From this simple principle, we deduce some highly nontrivial consequences for holographic quantum gravity. These include: (1) certain cosmological bounces are forbidden, (2) generic singularities inside black holes cannot be resolved, and (3 ...
Engelhardt, Netta, Horowitz, Gary T.
openaire   +3 more sources

The gravity dual of Rényi entropy

open access: yesNature Communications, 2016
The discovery that the entropy of black holes is given by their horizon area inspired the holographic principle and led to gauge-gravity duality. Here, the author shows that all Rényi entropies satisfy a similar area law in holographic theories and are ...
Xi Dong
doaj   +1 more source

Entropy Bounds and Field Equations

open access: yesEntropy, 2015
For general metric theories of gravity, we compare the approach that describes/derives the field equations of gravity as a thermodynamic identity with the one which looks at them from entropy bounds.
Alessandro Pesci
doaj   +1 more source

Holographic Cavalieri principle as a universal relation between holographic complexity and holographic entanglement entropy [PDF]

open access: yesInternational Journal of Modern Physics D, 2018
In this paper, we will propose a universal relation between the holographic complexity (dual to a volume in AdS) and the holographic entanglement entropy (dual to an area in anti-de Sitter (AdS)). We will explicitly demonstrate that our conjuncture holds for all metrics asymptotic to [Formula: see text], and then argue that such a relation should hold
Davood Momeni   +2 more
openaire   +2 more sources

Optical Detection of Cellular Signals at Material Interfaces

open access: yesAdvanced Healthcare Materials, EarlyView.
Emerging functional materials are transforming optical detection of cellular signals. This review highlights optical techniques that exploit the unique optical properties of diverse materials to detect and quantify cellular electrical, chemical, and mechanical signals, and discusses key opportunities and challenges.
Xuchen Ren   +5 more
wiley   +1 more source

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