Causal influence in operational probabilistic theories

@article{Perinotti2021CausalII,
  title={Causal influence in operational probabilistic theories},
  author={Paolo Perinotti},
  journal={Quantum},
  year={2021}
}
We study the relation of causal influence between input systems of a reversible evolution and its output systems, in the context of operational probabilistic theories. We analyse two different definitions that are borrowed from the literature on quantum theory—where they are equivalent. One is the notion based on signalling, and the other one is the notion used to define the neighbourhood of a cell in a quantum cellular automaton. The latter definition, that we adopt in the general scenario… Expand

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