Quantum Physics


Must a Quantum Mechanical Particle Sometimes be in Two Places at Once?

Authors: John Hemp

In this short paper, we point out that the interference of probabilities in the double slit experiment, or in a particle interferometer, should not necessarily lead us to think that a quantum mechanical particle’s position is a meaningless concept or that continuous motion of a quantum mechanical particle is an impossibility. We do not need to conclude that a particle must sometimes be in two places at once, or that nature herself does not know exactly where a particle is etc. We show that the argument leading to that kind of conclusion, based on the interference of probabilities, is illogical when probability is viewed in a rational Bayesian fashion i.e. as accounting for rational degree of belief in an occurrence rather than the relative frequency of that occurrence in many trials. We lend support to the view that much progress may be made in the interpretation of the quantum formalism and in the formation of physical pictures of processes in quantum mechanics by viewing probability in a rational Bayesian manner. Keywords Quantum Mechanics, uncertainty principle, Bayesian probability, Realism, QBism.

Comments: 8Pages. This paper was offered to the International Journal of Theoretical Physics in October 2018 but was rejected by the editors without technical review. It seems they do not publish new theories which they say are better published in book form.

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Submission history

[v1] 2019-04-29 04:35:19

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