Physics – Quantum Physics
Scientific paper
2010-04-08
Physics
Quantum Physics
plainTeX, 26 pages, 2 figures. To appear in G.F.R. Ellis, J. Murugan and A. Weltman (eds), {\it Foundations of Space and Time}
Scientific paper
I will propose that the reality to which the quantum formalism implicitly refers is a kind of generalized history, the word history having here the same meaning as in the phrase sum-over-histories. This proposal confers a certain independence on the concept of event, and it modifies the rules of inference concerning events in order to resolve a contradiction between the idea of reality as a single history and the principle that events of zero measure cannot happen (the Kochen-Specker paradox being a classic expression of this contradiction). The so-called measurement problem is then solved if macroscopic events satisfy classical rules of inference, and this can in principle be decided by a calculation. The resulting conception of reality involves neither multiple worlds nor external observers. It is therefore suitable for quantum gravity in general and causal sets in particular.
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