How strange is quantum mechanics? An introduction to local-realism violation

D. Boschi, F. De Martini, Giovanni Di Giuseppe

Marcello Poletti

Stéphane Le Corre

The aim of this study is to produce a simulation of EPR experiments violating the CHSH-Bell inequalities using physically interpretable objects (properties defined before measurement) and interactions (no supraliminal communication), without influence from any theory. It turns out that the proposed model systematically violates the CHSH-Bell inequalities reaching all the values ( 2 ≤ S ≤ 4 ) . Our simulation reproduces experimental entanglements with greater efficiency. This approach has at least two consequences. First, it demonstrates that violations of the CHSH-Bell inequalities are possible while still verifying the principles of realism and locality, but in a different sense from that of Bell’s theorem. Therefore, Bell’s theorem itself is not called into question, nor are the results of the EPR experiments. However, it is the deduction that leads to the current interpretation (often described as strange because it does not follow one of the principles of realism and locality as defined by Bell’s theorem) that is challenged. Second, it challenges real-world EPR experiments to exceed the efficiency rates of our simulation. Our idealization demonstrates that, between the efficiency rates required to confirm the violation of Bell’s inequalities and the efficiency rates of our idealization, the interpretation of experiments remains possible within a framework of “classical” physical principles (properties defined before measurement and no supraliminal communication). Confirming the strangeness of quantum mechanics would therefore require obtaining efficiency rates higher than those of Bell’s theorem.

Andrew P. Yake

Local realism is essentially the premise that physical reality is already physically real and that causal influence propagates through spacetime in a mechanistic way like a chain of toppling dominoes. However, local realism has been replaced by quantum theory as the scientific model of physical reality. Causal signal propagation under quantum theory is like starting with an arbitrarily long chain of dominoes, then removing all the dominoes in the middle and claiming that the first can topple the last instantly anyways -- just because we don't have any better ideas. The argument for replacing local realism with quantum theory requires that the Bell inequality is an accurate description of the predictions of local realism in an EPR experiment. However, many researchers conclude otherwise. Strangely, this substantial countersignal seems to promote fierce defensiveness rather than rational doubt among quantum believers. One begins to worry that the ongoing rejection of local realism is predicated upon motivated beliefs rather than upon motivated inquiry. Keywords: Local Realism. Local real dominoes. Quantum Dominoes. EPR. Bell inequality. Causal signal propagation. In any case, a concise paper posed as a local realistic puzzle representing an EPR experiment now claims to show that local realism explains Bell violations & thus plausibly all physical reality. The necessary logical flaw in the Bell inequality is claimed exposed in two paragraphs! See viXra:1704.0078 - Local Realism Explains Bell Violations (author Andrew P. Yake): 8 pages complete with figures, equations, a graph of testable predictions, and 32 references. Thoughtful feedback appreciated (apyake@gmail.com).

J. W. de Roever, Martin Streng