论文标题
Wigner朋友的物理和形而上学：即使执行预测量也没有结果
Physics and Metaphysics of Wigner's Friends: Even performed pre-measurements have no results
论文作者
论文摘要
“原则上必须说明正确的量子现象的明确描述，包括对实验布置的所有相关特征的描述”（Bohr）。测量过程由预测量（系统与指针变量的量子相关性）和通过与环境相互作用的不可逆转的分解组成。该系统以可观察到的可观察到的特征状态的概率混合物结束。对于预测量阶段，任何试图引入“结果”线索的任何尝试均为逻辑上的矛盾，$ 1 = i $。这使人们声称，韦格纳朋友的修改概念只是预先测量，可以导致有关量子理论的有效结果。
"The unambiguous account of proper quantum phenomena must, in principle, include a description of all relevant features of experimental arrangement" (Bohr). The measurement process is composed of pre-measurement (quantum correlation of the system with the pointer variable), and an irreversible decoherence via interaction with an environment. The system ends up in a probabilistic mixture of the eigenstates of the measured observable. For the pre-measurement stage, any attempt to introduce an 'outcome' leads, as we show, to a logical contradiction, $1=i$. This nullifies claims that a modified concept of Wigner's Friend, who just pre-measures, can lead to valid results concerning quantum theory.
