The arrow of time in operational formulations of quantum theory

@article{Biagio2021TheAO,
  title={The arrow of time in operational formulations of quantum theory},
  author={Andrea Di Biagio and Pietro Don{\`a} and Carlo Rovelli},
  journal={Quantum},
  year={2021}
}
The operational formulations of quantum theory are drastically time oriented. However, to the best of our knowledge, microscopic physics is time-symmetric. We address this tension by showing that the asymmetry of the operational formulations does not reflect a fundamental time-orientation of physics. Instead, it stems from built-in assumptions about the users of the theory. In particular, these formalisms are designed for predicting the future based on information about the past, and the main… Expand
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