Quantum non-locality based on finite-speed causal influences leads to superluminal signalling

@article{Bancal2012QuantumNB,
  title={Quantum non-locality based on finite-speed causal influences leads to superluminal signalling},
  author={Jean-Daniel Bancal and Stefano Pironio and Antonio Ac{\'i}n and Yeong-Cherng Liang and Valerio Scarani and Nicolas Gisin},
  journal={Nature Physics},
  year={2012},
  volume={8},
  pages={867-870}
}
Non-local quantum correlations between distant particles cannot be explained by signals propagating slower than the speed of light. It is now shown that they cannot be explained by hidden influences propagating faster than the speed of light either, because that would permit faster-than-light communication. 
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