Weekly Papers on Quantum Foundations (38)

Generalised Reichenbachian common cause systems 上午8:00 | Latest Results for Synthese Abstract The principle of the common cause claims that if an improbable coincidence has occurred, there must exist a common cause. This is generally taken to mean that positive correlations between non-causally related events should disappear when conditioning on the action of some underlying common cause. The extended interpretation… Read more →

Weekly Papers on Quantum Foundations (37)

When is a set of questions to nature together with sharp answers to those questions in one-to-one correspondence with a set of quantum states?. (arXiv:1909.08834v1 [quant-ph]) 上午9:10 | quant-ph updates on arXiv.org Authors: Inge S. Helland A general question is posed to the quantum community. Partial results are formulated in a self-contained way. In particular, the title question is answered affirmatorily… Read more →

Weekly Papers on Quantum Foundations (36)

Classical causal models cannot faithfully explain Bell nonlocality or Kochen-Specker contextuality in arbitrary scenarios. (arXiv:1909.05434v1 [quant-ph]) 下午12:56 | quant-ph updates on arXiv.org Authors: J. C. Pearl, E. G. Cavalcanti In a recent work, it was shown by one of us (EGC) that Bell-Kochen-Specker inequality violations in phenomena satisfying the no-disturbance condition (a generalisation of the no-signalling condition) cannot in general be explained… Read more →