Joel Dobrzelewski: > I know this is not a popular view, but I am not convinced of the validity of > such experiments. One proponent of the realist opinion, who has better > arguments than I, is Caroline Thompson: > http://users.aber.ac.uk/cat/
Yes, I know. But chances for loopholes are very narrow, after 20 years, unfortunately. > I admit I'm not too familiar with these concepts or terms. I'll try to read > up and understand them a little better. > In the mean time, my main objection to non-local phenomena is, once again, > our inability to formally implement it. > Challenge: write a set of non-local equations or a non-local computer > program that isn't implemented locally. > For example: > It would be easy enough to program a virtual reality simulation to exhibit > seemingly non-local behaviors. We could even do something extremely > macroscopic like joining the motion of two pool balls firmly together - so > that whenever one was moved, the other moved also - seemingly > instantaneously. Very interesting. For local vs non-local experiments and effects with (two separated) computers see: www.maths.nottingham.ac.uk/personal/sjw/abstracts/accardi.html http://volterra.mat.uniroma2.it/ the link "probability and quantum ...." Have a look also to: http://arxiv.org/abs/quant-ph/0007019 Non-locality and quantum theory: new experimental evidence Luigi Accardi, Massimo Regoli Starting from the late 60's many experiments have been performed to verify the violation Bell's inequality by Einstein-Podolsky-Rosen (EPR) type correlations. The idea of these experiments being that: (i) Bell's inequality is a consequence of locality, hence its experimental violation is an indication of non locality; (ii) this violation is a typical quantum phenomenon because any classical system making local choices (either deterministic or random) will produce correlations satisfying this inequality. Both statements (i) and (ii) have been criticized by quantum probability on theoretical grounds (not discussed in the present paper) and the experiment discussed below has been devised to support these theoretical arguments. We emphasize that the goal of our experiment is not to reproduce classically the EPR correlations but to prove that there exist perfectly local classical dynamical systems violating Bell's inequality. http://arxiv.org/abs/quant-ph/0007005 Locality and Bell's inequality Luigi Accardi, Massimo Regoli We prove that the locality condition is irrelevant to Bell in equality. We check that the real origin of the Bell's inequality is the assumption of applicability of classical (Kolmogorovian) probability theory to quantum mechanics. We describe the chameleon effect which allows to construct an experiment realizing a local, realistic, classical, deterministic and macroscopic violation of the Bell inequalities. http://arxiv.org/abs/quant-ph/9606019 A Proposed Experiment Showing that Classical Fields Can Violate Bell's Inequalities Patrick Suppes (Stanford University, USA), J. Acacio de Barros (Federal University at Juiz de Fora, Brazil), Adonai S. Sant'Anna (Federal University at Parana, Brazil) We show one can use classical fields to modify a quantum optics experiment so that Bell's inequalities will be violated. This happens with continuous random variables that are local, but we need to use the correlation matrix to prove there can be no joint probability distribution of the observables. For "joining the motion of two pool balls firmly together", etc. see http://arxiv.org/abs/quant-ph/0007044 The Violation of Bell Inequalities in the Macroworld Diederik Aerts, Sven Aerts, Jan Broekaert, Liane Gabora We show that Bell inequalities can be violated in the macroscopic world. The macroworld violation is illustrated using an example involving connected vessels of water. We show that whether the violation of inequalities occurs in the microworld or in the macroworld, it is the identification of nonidentical events that plays a crucial role. Specifically, we prove that if nonidentical events are consistently differentiated, Bell-type Pitowsky inequalities are no longer violated, even for Bohm's example of two entangled spin 1/2 quantum particles. We show how Bell inequalities can be violated in cognition, specifically in the relationship between abstract concepts and specific instances of these concepts. This supports the hypothesis that genuine quantum structure exists in the mind. We introduce a model where the amount of nonlocality and the degree of quantum uncertainty are parameterized, and demonstrate that increasing nonlocality increases the degree of violation, while increasing quantum uncertainty decreases the degree of violation. and for Bohm-Aharonov effect and weird jamming: http://arxiv.org/abs/quant-ph/9605004 Action and Passion at a Distance: An Essay in Honor of Professor Abner Shimony Sandu Popescu, Daniel Rohrlich Quantum mechanics permits nonlocality---both nonlocal correlations and nonlocal equations of motion---while respecting relativistic causality. Is quantum mechanics the unique theory that reconciles nonlocality and causality? We consider two models, going beyond quantum mechanics, of nonlocality---``superquantum" correlations, and nonlocal ``jamming" of correlations---and derive new results for the jamming model. In one space dimension, jamming allows reversal of the sequence of cause and effect; in higher dimensions, however, effect never precedes cause. http://arxiv.org/abs/quant-ph/9508001 Jamming non-local quantum correlations J. Grunhaus, S. Popescu, D. Rohrlich We present a possible scheme to tamper with non-local quantum correlations in a way that is consistent with relativistic causality, but goes beyond quantum mechanics. A non-local ``jamming" mechanism, operating within a certain space-time window, would not violate relativistic causality and would not lead to contradictory causal loops. The results presented in this Letter do not depend on any model of how quantum correlations arise and apply to any jamming mechanism. Thanks, - Scerir
