The exact price of local realism in CHSH experiments: a measurement-dependence-detection trade-off surface, a moir'e phase-locking mechanism that saturates it, and an unmeasured fringe in the fourfold coincidence sum

quant-ph

Submitted: 2026-08-19

Updated: 2026-10-18

Comments: 14 pages, 5 figures. Code and exact certificates at https://github.com/RandomInternetPreson/moire-phase-space-sampler. v4: Secs. 9-10 rewritten after independent review; the claims that existing data do not constrain the fringe and that flatness forces measurement dependence are withdrawn. Theorem 2 restated (equal values, not zero, at the CHSH angles). Mathematical results unchanged

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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