English

Consistent Quantum Counterfactuals

Quantum Physics 2009-10-31 v3

Abstract

An analysis using classical stochastic processes is used to construct a consistent system of quantum counterfactual reasoning. When applied to a counterfactual version of Hardy's paradox, it shows that the probabilistic character of quantum reasoning together with the ``one framework'' rule prevents a logical contradiction, and there is no evidence for any mysterious nonlocal influences. Counterfactual reasoning can support a realistic interpretation of standard quantum theory (measurements reveal what is actually there) under appropriate circumstances.

Keywords

Cite

@article{arxiv.quant-ph/9805056,
  title  = {Consistent Quantum Counterfactuals},
  author = {Robert B. Griffiths},
  journal= {arXiv preprint arXiv:quant-ph/9805056},
  year   = {2009}
}

Comments

Minor modifications to make it agree with published version. Latex 8 pages, 2 figures