Quantum Nonlocality: how does Nature do it?
- URL: http://arxiv.org/abs/2402.00725v2
- Date: Tue, 27 Feb 2024 23:00:20 GMT
- Title: Quantum Nonlocality: how does Nature do it?
- Authors: Marian Kupczynski
- Abstract summary: This paper advocates the importance of contextuality, Einstein causality and global symmetries.
The violation of Bell inequalities in physics and in cognitive science can be explained using the notion of Bohr contextuality.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: In his article in Science, Nicolas Gisin claimed that quantum correlations
emerge from outside space time. We explain that they are due to space time
symmetries. This paper is a critical review of metaphysical conclusions found
in many recent articles. It advocates the importance of contextuality, Einstein
causality and global symmetries. Bell tests allow only rejecting probabilistic
coupling provided by a local hidden variable model, but they do not justify
metaphysical speculations about quantum nonlocality and objects which know
about each other state, even when separated by large distances. The violation
of Bell inequalities in physics and in cognitive science can be explained using
the notion of Bohr contextuality. If contextual variables, describing varying
experimental contexts, are correctly incorporated into a probabilistic model,
then the Bell and CHSH inequalities cannot be proven and nonlocal correlations
may be explained in an intuitive way. We also elucidate the meaning of
statistical independence assumption incorrectly called free choice, measurement
independence or no conspiracy. Since correlation does not imply causation, the
violation of statistical independence should be called contextuality and it
does not restrict the experimenter freedom of choice. Therefore, contrary to
what is believed, closing the freedom of choice loophole does not close the
contextuality loophole.
Related papers
- A computational test of quantum contextuality, and even simpler proofs of quantumness [43.25018099464869]
We show that an arbitrary contextuality game can be compiled into an operational "test of contextuality" involving a single quantum device.
Our work can be seen as using cryptography to enforce spatial separation within subsystems of a single quantum device.
arXiv Detail & Related papers (2024-05-10T19:30:23Z) - Some consequences of Sica's approach to Bell's inequalities [55.2480439325792]
Louis Sica derived Bell's inequalities from the hypothesis that the time series of outcomes observed in one station does not change if the setting in the other station is changed.
In this paper, Sica's approach is extended to series with non ideal efficiency and to the actual time structure of experimental data.
arXiv Detail & Related papers (2024-03-05T13:59:52Z) - Quantum nonlocality: How does nature do it? [0.0]
Hance and Hossenfelder argue that maintaining local causality requires violating statistical independence.
Here, we recall that there is a third option, namely, rejecting that measurement outcomes are governed in any way by hidden variables.
We argue that this third option is scientifically more plausible and answers the question of why and how nature produces quantum nonlocality.
arXiv Detail & Related papers (2022-11-11T20:32:42Z) - Contextuality or nonlocality; what would John Bell choose today? [0.0]
A violation of Bell-CHSH inequalities does not justify speculations about quantum non-locality.
For us, a violation of Bell-CHSH inequalities proves only that hidden variables have to depend on settings confirming contextual character of quantum observables.
arXiv Detail & Related papers (2022-02-19T16:50:07Z) - Comment on Causal Networks and Freedom of Choice in Bell's Theorem [0.0]
The independence of hidden and setting variables is called: freedom of choice, free will, measurement independence or no conspiracy.
By imbedding the Bell causal structure in a larger causal network the authors correctly prove, that one can explain and quantify possible violation of measurement independence without evoking the super-determinism.
We explain why freedom of choice should be called noncontextuality and why its violation in Bell Tests confirms only the contextual character of quantum observables.
arXiv Detail & Related papers (2022-01-20T22:53:00Z) - Supermeasured: Violating Bell-Statistical Independence without violating
physical statistical independence [0.0]
Bell's theorem is often said to imply that quantum mechanics violates local causality.
This is only correct if the hidden-variables theory fulfils an assumption called Statistical Independence.
arXiv Detail & Related papers (2021-08-16T18:00:33Z) - Contextuality-by-Default description of Bell tests: Contextuality as the
rule not as an exception [0.0]
Bell inequalities are used to certify entanglement.
Quantum mechanics and behavioral sciences teach us that random variables measuring the same content may vary.
We prove that this model does not restrict experimenters freedom of choice which is a prerequisite of science.
arXiv Detail & Related papers (2021-04-23T12:30:53Z) - Non-Boolean Hidden Variables model reproduces Quantum Mechanics'
predictions for Bell's experiment [91.3755431537592]
Theory aimed to violate Bell's inequalities must start by giving up Boolean logic.
"Hard" problem is to predict the time values when single particles are detected.
"Soft" problem is to explain the violation of Bell's inequalities within (non-Boolean) Local Realism.
arXiv Detail & Related papers (2020-05-20T21:46:35Z) - Quantum Mechanical description of Bell's experiment assumes Locality [91.3755431537592]
Bell's experiment description assumes the (Quantum Mechanics-language equivalent of the classical) condition of Locality.
This result is complementary to a recently published one demonstrating that non-Locality is necessary to describe said experiment.
It is concluded that, within the framework of Quantum Mechanics, there is absolutely no reason to believe in the existence of non-Local effects.
arXiv Detail & Related papers (2020-02-27T15:04:08Z) - Using Randomness to decide among Locality, Realism and Ergodicity [91.3755431537592]
An experiment is proposed to find out, or at least to get an indication about, which one is false.
The results of such experiment would be important not only to the foundations of Quantum Mechanics.
arXiv Detail & Related papers (2020-01-06T19:26:32Z) - Bell's theorem for trajectories [62.997667081978825]
A trajectory is not an outcome of a quantum measurement, in the sense that there is no observable associated with it.
We show how to overcome this problem by considering a special case of our generic inequality that can be experimentally tested point-by-point in time.
arXiv Detail & Related papers (2020-01-03T01:40:44Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.