Almost Quantum Correlations are Inconsistent with Specker's Principle

摘要: Ernst Specker considered a particular feature of quantum theory to be especially fundamental, namely that pairwise joint measurability sharp measurements implies their global (this https URL). To date, Specker's principle seemed incapable singling out from the space all general probabilistic theories. In particular, its well-known consequence for experimental statistics, consistent exclusivity, does not rule set correlations known as almost quantum, which is strictly larger than correlations. Here we show that, contrary popular belief, cannot satisfied in any yields