Manufacturing time operators: covariance, selection criteria, and examples

G. C. Hegerfeldt , J. G. Muga , J. Mu\~noz

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classification 🪐 quant-ph

keywords operatorstimecriteriaexamplesquantumapplicationsarrivalcases

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We provide the most general forms of covariant and normalized time operators and their probability densities, with applications to quantum clocks, the time of arrival, and Lyapunov quantum operators. Examples are discussed of the profusion of possible operators and their physical meaning. Criteria to define unique, optimal operators for specific cases are given.

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Manufacturing time operators: covariance, selection criteria, and examples

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