### A simple proof of Bornâ€™s rule for statistical interpretation of quantum mechanics

#### Abstract

The Bornâ€™s rule to interpret the square of wave function as the probability to get a specific value in measurement has been accepted as a postulate in foundations of quantum mechanics. Although there have been so many attempts at deriving this rule theoretically using different approaches such as frequency operator approach, many-world theory, Bayesian probability and envariance, literature shows that arguments in each of these methods are circular. In view of absence of a convincing theoretical proof, recently some researchers have carried out experiments to validate the rule up-to maximum possible accuracy using multi-order interference (Sinha et al, *Science*, **329**, 418 [2010]). But, a convincing analytical proof of Bornâ€™s rule will make us understand the basic process responsible for exact square dependency of probability on wave function. In this paper, by generalizing the method of calculating probability in common experience into quantum mechanics, we prove the Bornâ€™s rule for statistical interpretation of wave function.

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