Pashby, Thomas (2016) At what time does a quantum experiment have a result? [Preprint]
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Abstract
This paper provides a general method for defining a generalized quantum observable (or POVM) that supplies properly normalized conditional probabilities for the time of occurrence (i.e., of detection). This method treats the time of occurrence as a probabilistic variable whose value is to be determined by experiment and predicted by the Born rule. This avoids the problematic assumption that a question about the time at which an event occurs must be answered through instantaneous measurements of a projector by an observer, common to both Rovelli (1998) and Oppenheim et al. (2000). I also address the interpretation of experiments purporting to demonstrate the quantum Zeno effect, used by Oppenheim et al. (2000) to justify an inherent uncertainty for measurements of times.
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| Item Type: | Preprint | ||||||
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| Keywords: | time observable, quantum mechanics, measurement, POVMs, event time observable, quantum zeno | ||||||
| Subjects: | Specific Sciences > Physics Specific Sciences > Probability/Statistics Specific Sciences > Physics > Quantum Mechanics Specific Sciences > Physics > Symmetries/Invariances General Issues > Theory/Observation |
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| Depositing User: | Dr. Thomas Pashby | ||||||
| Date Deposited: | 29 Jun 2016 00:32 | ||||||
| Last Modified: | 29 Jun 2016 00:32 | ||||||
| Item ID: | 12031 | ||||||
| Subjects: | Specific Sciences > Physics Specific Sciences > Probability/Statistics Specific Sciences > Physics > Quantum Mechanics Specific Sciences > Physics > Symmetries/Invariances General Issues > Theory/Observation |
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| Date: | 2016 | ||||||
| URI: | https://philsci-archive.pitt.edu/id/eprint/12031 |
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