Local Realism Without Hidden Variables
Quantum superposition is a process in which single entities express the effect of many states at the same time. This is difficult to explain with local realist models, because classical objects can only be in one state at a time. So far, the main approach was to invoke a class of hidden variables that might explain the appearance (but not the reality) of superposition effects. Yet, this hypothesis was falsified by the experimental violations of Bell’s inequality. The alternative is to accept the ontological validity of quantum superposition, with an interpretive twist. The single net state, which is equal to the vector sum of many component states, must be described as real. This is not only plausible. It actually avoids the known interpretive pitfalls of quantum mechanics (including the measurement problem and the EPR paradox).
KeywordsLocal realism Hidden variables Superposition
- 5.Mardari, G. N., Greenwood, J. A.: Classical sources of non-classical physics: the case of linear superposition. arXiv:quant-ph/0409197 (2013)Google Scholar
- 6.Howard, D.: Revisiting the Einstein-Bohr dialogue. Iyyun: Jerus. Philoso. Q. 56, 57–90 (2007)Google Scholar
- 16.Jammer, M.: The Conceptual Development of Quantum Mechanics. McGraw Hill, New York (1966)Google Scholar