{"title":"Relational quantum mechanics is still incompatible with quantum mechanics","authors":"Jay Lawrence, Marcin Markiewicz, Marek Żukowski","doi":"10.1007/s13194-025-00639-3","DOIUrl":null,"url":null,"abstract":"<p>We showed in a recent article (Lawrence et al. 2023. <i>Quantum, 7</i>, 1015), that relative facts (outcomes), a central concept in Relational Quantum Mechanics, are inconsistent with Quantum Mechanics. We proved this by constructing a Wigner-Friend type sequential measurement scenario on a Greenberger-Horne-Zeilinger (GHZ) state of three qubits, and making the following assumption: “if an interpretation of quantum theory introduces some conceptualization of outcomes of a measurement, then probabilities of these outcomes must follow the quantum predictions as given by the Born rule.” Our work has been criticized by Cavalcanti et al. (2023. <i>European Journal for Philosophy of Science, 13</i>(4),55). In this note we show that their critique, based on their own reformulation of our argument, does not apply to our paper. It also raises questions of principle which are not answered within the framework of Relational Quantum Mechanics.</p>","PeriodicalId":48832,"journal":{"name":"European Journal for Philosophy of Science","volume":"13 1","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Journal for Philosophy of Science","FirstCategoryId":"98","ListUrlMain":"https://doi.org/10.1007/s13194-025-00639-3","RegionNum":1,"RegionCategory":"哲学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"HISTORY & PHILOSOPHY OF SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
We showed in a recent article (Lawrence et al. 2023. Quantum, 7, 1015), that relative facts (outcomes), a central concept in Relational Quantum Mechanics, are inconsistent with Quantum Mechanics. We proved this by constructing a Wigner-Friend type sequential measurement scenario on a Greenberger-Horne-Zeilinger (GHZ) state of three qubits, and making the following assumption: “if an interpretation of quantum theory introduces some conceptualization of outcomes of a measurement, then probabilities of these outcomes must follow the quantum predictions as given by the Born rule.” Our work has been criticized by Cavalcanti et al. (2023. European Journal for Philosophy of Science, 13(4),55). In this note we show that their critique, based on their own reformulation of our argument, does not apply to our paper. It also raises questions of principle which are not answered within the framework of Relational Quantum Mechanics.
我们在最近的一篇文章中显示（Lawrence et al. 2023）。相对事实（结果），关系量子力学的中心概念，与量子力学不一致。我们通过在三个量子位的格林伯格-霍恩-塞林格（GHZ）状态上构建Wigner-Friend型顺序测量场景来证明这一点，并做出以下假设：“如果量子理论的解释引入了测量结果的某些概念化，那么这些结果的概率必须遵循玻恩规则给出的量子预测。”我们的工作受到了Cavalcanti等人的批评（2023）。科学哲学学报，2013(4),39(5)。在本文中，我们表明，他们的批评，基于他们自己的重新表述我们的论点，并不适用于我们的论文。它还提出了在关系量子力学的框架内无法回答的原理问题。
期刊介绍：
The European Journal for Philosophy of Science publishes groundbreaking works that can deepen understanding of the concepts and methods of the sciences, as they explore increasingly many facets of the world we live in. It is of direct interest to philosophers of science coming from different perspectives, as well as scientists, citizens and policymakers. The journal is interested in articles from all traditions and all backgrounds, as long as they engage with the sciences in a constructive, and critical, way. The journal represents the various longstanding European philosophical traditions engaging with the sciences, but welcomes articles from every part of the world.
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