Adlam, Emily and Rovelli, Carlo (2022) Information is Physical: Cross-Perspective Links in Relational Quantum Mechanics. [Preprint]
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Abstract
Relational quantum mechanics (RQM) is an interpretation of quantum mechanics based on the idea that quantum states describe not an absolute property of a system but rather a relationship between systems. In this article, we observe that there is a tension between RQM's naturalistic emphasis on the physicality of information and the inaccessibility of certain sorts of information in current formulations of RQM. Therefore we propose a new postulate for RQM which requires that all of the information possessed by a certain observer is stored in physical variables of that observer and thus accessible by measurement to other observers, so observers can reach intersubjective agreement about quantum events which have occurred in the past. Based on this postulate, we suggest an ontology for RQM which upholds the principle that quantum states are always relational, but which also postulates a set of quantum events which are not strictly relational. We show that the new postulate helps address some existing objections to RQM and finally we address the Frauchiger-Renner experiment in the context of RQM.
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| Item Type: | Preprint | |||||||||
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| Keywords: | Relational quantum mechanics; interpretation of quantum mechanics; intersubjectivity; decoherence | |||||||||
| Subjects: | Specific Sciences > Physics Specific Sciences > Physics > Quantum Mechanics |
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| Depositing User: | Dr Emily Adlam | |||||||||
| Date Deposited: | 21 Apr 2022 04:04 | |||||||||
| Last Modified: | 11 Jul 2024 13:07 | |||||||||
| Item ID: | 20469 | |||||||||
| Subjects: | Specific Sciences > Physics Specific Sciences > Physics > Quantum Mechanics |
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| Date: | 21 March 2022 | |||||||||
| URI: | https://philsci-archive.pitt.edu/id/eprint/20469 |
Available Versions of this Item
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Information is Physical: Cross-Perspective Links in Relational Quantum Mechanics. (deposited 25 Mar 2022 04:27)
- Information is Physical: Cross-Perspective Links in Relational Quantum Mechanics. (deposited 21 Apr 2022 04:04) [Currently Displayed]
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