关于自由选择概念的简短说明
A short note on the concept of free choice
摘要：
我们认为，“自由选择”和“因果顺序”的概念是内在联系的：选择被认为是“自由”，如果它是相关的，只有在其因果未来的变量。我们讨论了这对贝尔型场景的影响，其中进行了两个单独的测量，其中任何一个都不存在于另一个的因果未来，并且其中一个通常假设测量设置是自由选择的。此外，我们驳斥了最近的批评由Ghirardi和罗马诺在[arXiv：1301.5040]和[arXiv：1302.1635]，我们使用了一个非物质的自由选择假设在我们以前的作品，[Nat。2，411（2011）]和[Phys.Rev.Lett. 108，150402（2012）]。
英文摘要：
We argue that the concepts of "freedom of choice" and of "causal order" are intrinsically linked: a choice is considered "free" if it is correlated only to variables in its causal future. We discuss the implications of this to Bell-type scenarios, where two separate measurements are carried out, neither of which lies in the causal future of the other, and where one typically assumes that the measurement settings are chosen freely. Furthermore, we refute a recent criticism made by Ghirardi and Romano in [arXiv:1301.5040] and [arXiv:1302.1635] that we used an unphysical freedom of choice assumption in our previous works, [Nat. Commun. 2, 411 (2011)] and [Phys. Rev. Lett. 108, 150402 (2012)].
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