Abstract
We investigate the relationship between no-backwards-in-time signaling and classically causal correlations. We discover that, unlike the case for two parties, the no-backwards-in-time signaling paradigm for three parties is not enough to ensure that correlations can be reproduced with a classical causal ordering. We demonstrate this with an explicit example. We also generalize some existing results for linear two-time states to multiparty scenarios.
- Received 12 November 2018
DOI:https://doi.org/10.1103/PhysRevA.99.022101
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