Simulating all Nonsignaling Correlations via Classical or Quantum Theory with Negative Probabilities
Simulating all Nonsignaling Correlations via Classical or Quantum Theory with Negative Probabilities
Many-party correlations between measurement outcomes in general probabilistic theories are given by conditional probability distributions obeying the non-signalling condition. We show that any such distribution can be obtained from classical or quantum theory, by relaxing positivity constraints on either the mixed state shared by the parties, or the local functions …