Tripartite non-classical correlations without backwards in time signalling
classification
🪐 quant-ph
keywords
backwardscorrelationstimecausalpartiessignalingcaseclassical
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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 generalise some existing results for linear two-time states to multi-party scenarios.
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