Restoring Locality: The Heisenberg Picture as a Separable Description of Quantum Theory
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866918296459149312 |
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| author | Kuypers, Sam |
| author_facet | Kuypers, Sam |
| contents | Local realism has been the subject of much discussion in modern physics, partly because our deepest theories of physics appear to contradict one another in regard to whether reality is local. According to general relativity, it is, as physical quantities (perceptible or not) in two spacelike separated regions cannot affect one another. Yet, in quantum theory, it has traditionally been thought that local realism cannot hold and that such effects do occur. This apparent discrepancy between the two theories is resolved by Everettian quantum theory, as first proven by Deutsch & Hayden (2000). In this paper, I will explain how local realism is respected in quantum theory and review the advances in our understanding of locality since Deutsch & Hayden's work, including the concept of local branching and the more general analysis by Raymond-Robichaud (2021) |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2601_06522 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Restoring Locality: The Heisenberg Picture as a Separable Description of Quantum Theory Kuypers, Sam Quantum Physics Local realism has been the subject of much discussion in modern physics, partly because our deepest theories of physics appear to contradict one another in regard to whether reality is local. According to general relativity, it is, as physical quantities (perceptible or not) in two spacelike separated regions cannot affect one another. Yet, in quantum theory, it has traditionally been thought that local realism cannot hold and that such effects do occur. This apparent discrepancy between the two theories is resolved by Everettian quantum theory, as first proven by Deutsch & Hayden (2000). In this paper, I will explain how local realism is respected in quantum theory and review the advances in our understanding of locality since Deutsch & Hayden's work, including the concept of local branching and the more general analysis by Raymond-Robichaud (2021) |
| title | Restoring Locality: The Heisenberg Picture as a Separable Description of Quantum Theory |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2601.06522 |