不同的量子态可以与单一的现实态兼容
Distinct Quantum States Can Be Compatible with a Single State of Reality
摘要：
也许量子态代表的是关于实在的信息，而不是直接代表实在。因此，波函数坍缩可能并不比给定新数据的概率分布的贝叶斯更新更神秘。我们考虑量子系统的模型，其测量结果由系统的底层物理状态确定，但其中几个量子态与单个底层状态一致--即，不同量子态的概率分布重叠。值得注意的是，我们通过例子证明，额外的假设总是必要的，以排除这样的模型。
英文摘要：
Perhaps the quantum state represents information about reality, and not reality directly. Wave function collapse is then possibly no more mysterious than a Bayesian update of a probability distribution given new data. We consider models for quantum systems with measurement outcomes determined by an underlying physical state of the system but where several quantum states are consistent with a single underlying state---i.e., probability distributions for distinct quantum states overlap. Significantly, we demonstrate by example that additional assumptions are always necessary to rule out such a model.
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