Bell's theorem does not eliminate fully causal hidden variables

1988 ◽  
Vol 27 (2) ◽  
pp. 219-226 ◽  
Author(s):  
Carl H. Brans
Keyword(s):  
Hidden Variables ◽  
Bell’S Theorem ◽  
Bell's Theorem

scholarly journals Knowledge of Quantum Hidden Variables Enables Backwards-In-Time Signaling

2021 ◽  
Vol 11 (10) ◽  
pp. 4477
Author(s):  
Avishy Carmi ◽  
Eliahu Cohen ◽  
Lorenzo Maccone ◽  
Hrvoje Nikolić
Keyword(s):  
Quantum Mechanics ◽  
Reference Frame ◽  
Hidden Variables ◽  
Bohmian Mechanics ◽  
The State ◽  
Bell’S Theorem ◽  
Relativity Theory ◽  
Bell's Theorem ◽  
Preferred Reference Frame ◽  
Superluminal Signaling

Bell’s theorem implies that any completion of quantum mechanics which uses hidden variables (that is, preexisting values of all observables) must be nonlocal in the Einstein sense. This customarily indicates that knowledge of the hidden variables would permit superluminal communication. Such superluminal signaling, akin to the existence of a preferred reference frame, is to be expected. However, here we provide a protocol that allows an observer with knowledge of the hidden variables to communicate with her own causal past, without superluminal signaling. That is, such knowledge would contradict causality, irrespectively of the validity of relativity theory. Among the ways we propose for bypassing the paradox there is the possibility of hidden variables that change their values even when the state does not, and that means that signaling backwards in time is prohibited in Bohmian mechanics.

scholarly journals Measurement problem and local hidden variables with entangled photons

Open Physics ◽  
2017 ◽  
Vol 15 (1) ◽  
pp. 891-896
Author(s):  
Eugen Muchowski
Keyword(s):  
Singlet State ◽  
Measurement Problem ◽  
Hidden Variables ◽  
Polarization Measurement ◽  
Bell’S Theorem ◽  
Bell's Theorem ◽  
Entangled Photons ◽  
Polarization Measurements ◽  
Measurement Results ◽  
Hidden Parameter

AbstractIt is shown that there is no remote action with polarization measurements of photons in singlet state. A model is presented introducing a hidden parameter which determines the polarizer output. This model is able to explain the polarization measurement results with entangled photons. It is not ruled out by Bell’s Theorem.

scholarly journals Bell's theorem without hidden variables

1977 ◽  
Vol 38 (1) ◽  
pp. 75-80 ◽  
Author(s):  
P. H. Eberhard
Keyword(s):  
Hidden Variables ◽  
Bell’S Theorem ◽  
Bell's Theorem

Hidden variables and Bell's theorem in quantum mechanics

1994 ◽  
Vol 24 (5) ◽  
pp. 739-751 ◽  
Author(s):  
H. Kummer ◽  
R. G. McLean
Keyword(s):  
Quantum Mechanics ◽  
Hidden Variables ◽  
Bell’S Theorem ◽  
Bell's Theorem

scholarly journals Quantum Computation and Arrows of Time

Entropy ◽  
2020 ◽  
Vol 23 (1) ◽  
pp. 49
Author(s):  
Nathan Argaman
Keyword(s):  
Quantum Computation ◽  
Quantum Physics ◽  
Bell’S Theorem ◽  
Arrow Of Time ◽  
Bell's Theorem ◽  
Classical Domain ◽  
Further Development

Quantum physics is surprising in many ways. One surprise is the threat to locality implied by Bell’s Theorem. Another surprise is the capacity of quantum computation, which poses a threat to the complexity-theoretic Church-Turing thesis. In both cases, the surprise may be due to taking for granted a strict arrow-of-time assumption whose applicability may be limited to the classical domain. This possibility has been noted repeatedly in the context of Bell’s Theorem. The argument concerning quantum computation is described here. Further development of models which violate this strong arrow-of-time assumption, replacing it by a weaker arrow which is yet to be identified, is called for.

Bell's Theorem: What it Takes

1992 ◽  
Vol 43 (1) ◽  
pp. 41-83 ◽  
Author(s):  
JEREMY BUTTERFIELD
Keyword(s):  
Bell’S Theorem ◽  
Bell's Theorem
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