Results 51 to 60 of about 6,382,911 (207)

On a contextual model refuting Bell's theorem

open access: yesEurophysics letters, 2020
Bell's theorem is refuted by presenting a counterexample that correctly predicts the expectation values of QM. As Bell only ruled out non-contextual models, a contextual model with hidden variables can refute his theorem.
E. Muchowski
semanticscholar   +1 more source

Arithmetic Loophole in Bell's Theorem: Overlooked Threat to Entangled-State Quantum Cryptography

open access: yes, 2020
Bell's theorem is supposed to exclude all local hidden-variable models of quantum correlations. However, an explicit counterexample shows that a new class of local realistic models, based on generalized arithmetic and calculus, can exactly reconstruct ...
M. Czachor
semanticscholar   +1 more source

Bell’s theorem with no locality assumption: putting free will at work [PDF]

open access: yes, 2011
We prove a version of Bell’s Theorem which does not assume Locality but instead only the conjunction of a Free Will Principle (so weak that one’s will needs not be free from one’s past) and what we call the Effect After Cause ...
C. Tresser
core   +1 more source

The photon identification loophole in EPRB experiments: computer models with single-wing selection

open access: yesOpen Physics, 2017
Recent Einstein-Podolsky-Rosen-Bohm experiments [M. Giustina et al. Phys. Rev. Lett. 115, 250401 (2015); L. K. Shalm et al. Phys. Rev. Lett. 115, 250402 (2015)] that claim to be loophole free are scrutinized.
De Raedt Hans   +2 more
doaj   +1 more source

From Bell's theorem to secure quantum key distribution. [PDF]

open access: yesPhysical Review Letters, 2005
The first step in any quantum key distribution (QKD) protocol consists of sequences of measurements that produce correlated classical data. We show that these correlation data must violate some Bell inequality in order to contain distillable secrecy, if ...
A. Acín, N. Gisin, L. Masanes
semanticscholar   +1 more source

Power spectral density and the brain

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract Time series from M/EEG (magneto/electroencephalography) and ECoG (electrocorticography) recordings are common sources of information about brain function. The power spectral density (PSD) preserves much of this information, up to second order. In the current decade, a burst of brain diagnostics using the slope of log(PSD) has appeared.
Priscilla E. Greenwood   +2 more
wiley   +1 more source

Disproof of Bell's Theorem [PDF]

open access: yes, 2011
We illustrate an explicit counterexample to Bell's theorem by constructing a pair of dichotomic variables that exactly reproduce the EPR-Bohm correlations in a manifestly local-realistic ...
Christian, Joy
core  

Realism and objectivism in quantum mechanics [PDF]

open access: yes, 2012
The present study attempts to provide a consistent and coherent account of what the world could be like, given the conceptual framework and results of contemporary quantum theory. It is suggested that standard quantum mechanics can, and indeed should, be
Karakostas, V., Karakostas, Vassilios
core   +1 more source

Deterministic all-versus-nothing proofs of Bell nonlocality based on non-stabilizer states

open access: yesNew Journal of Physics, 2023
The all-versus-nothing proof of Bell nonlocality is a prominent demonstration of Bell’s theorem without inequalities. There are two kinds of such proofs: the deterministic all-versus-nothing proof and the probabilistic all-versus-nothing proof, which ...
Weidong Tang
doaj   +1 more source

High-Dimensional Quantum Communication Complexity beyond Strategies Based on Bell's Theorem. [PDF]

open access: yesPhysical Review Letters, 2018
Quantum resources can improve communication complexity problems (CCPs) beyond their classical constraints. One quantum approach is to share entanglement and create correlations violating a Bell inequality, which can then assist classical communication. A
D. Martínez   +5 more
semanticscholar   +1 more source

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