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Since the discovery of quantum mechanics, probabilities have play a central role in fundamental physics. The mathematical formalism of quantum mechanics makes statements about expectation values of observables. The expectation value describes the mean value of an observable for an ensemble of many identical measurements. It is a genuinely probabilistic concept since every possible measurement value of the observable is weighted by the probability of finding it. The quantum laws for the computation of these probabilities are often felt to be mysterious.

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Introduction

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  • 发表日期：

    2025年

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  • Christof Wetterich

摘要

Since the discovery of quantum mechanics, probabilities have play a central role in fundamental physics. The mathematical formalism of quantum mechanics makes statements about expectation values of observables. The expectation value describes the mean value of an observable for an ensemble of many identical measurements. It is a genuinely probabilistic concept since every possible measurement value of the observable is weighted by the probability of finding it. The quantum laws for the computation of these probabilities are often felt to be mysterious.