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Bell’s Theorem, Quantum Theory and Conceptions of the Universe
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“Therefore, the locality condition conflicts with quantum mechanics; quantum mechanics is nonlocal.”
From An Elementary Proof That Everett's Quantum Multiverse Is Nonlocal: Bell-Locality and Branch-Symmetry in the Many-Worlds Interpretation (2023) · cites this paper as [5]
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Zhan, Y.-B. (2005) · Physics Letters A · doi:10.1016/j.physleta.2004.12.073 · Cited by 41
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“-a,”
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Müller, T., Belnap, N., & Kishida, K. (2007) · Synthese · doi:10.1007/s11229-007-9220-7 · Cited by 39
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Xiang, G., Huang, Y., Sun, F., Zhang, P., Ou, Z. Y., & Guo, G. (2006) · Physical Review Letters · doi:10.1103/physrevlett.97.023604 · Cited by 39
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Clifton, R. K., & Niemann, P. (1992) · Physics Letters A · doi:10.1016/0375-9601(92)90358-s · Cited by 41
Gavoille, C., Kosowski, A., & Markiewicz, M. (2009) · Lecture notes in computer science · doi:10.1007/978-3-642-04355-0_26 · Cited by 36
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Jeong, H., Kang, M., & Kwon, H. (2014) · Optics Communications · doi:10.1016/j.optcom.2014.07.012 · Cited by 39
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“In this paper we present technique to develop entanglement between external degrees of freedom of atoms which are defined by means of their momentum states.”
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“all values of {p, a, b} ∈ [0, 1], where |GHZ〉 = √ a|000〉+ √ (1− a)|111〉 is the generalized GHZ state [45].”
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Emary, C., & Beenakker, C. W. J. (2004) · Physical Review A · doi:10.1103/physreva.69.032317 · Cited by 37
Entanglement of three-qubit pure states in terms of teleportation capability
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Generalizing Tsirelson's Bound on Bell Inequalities Using a Min-Max Principle
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Macroscopic boson states exhibiting the Greenberger-Horne-Zeilinger contradiction with local realism
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Systematically localizable operators for quantum simulations of quantum field theories
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“[32] Daniel M Greenberger, Michael A Horne, and Anton Zeilinger.”
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Metadata
- Authors
- Kafatos, M. C.
- Affiliations
- George Mason University (US)
- Corresponding author
- Menas C. Kafatos
- ORCID
- Menas C. Kafatos
- Venue
- Springer eBooks
- Publisher
- Springer Netherlands
- Published
- 1989
- OpenAlex
- W580957117
- Cited by
- 1,632
- References
- 0
- Citations by year
- 2026: 7 · 2025: 44 · 2024: 55 · 2023: 52 · 2022: 63 · 2021: 39 · 2020: 49 · 2019: 39 · 2018: 54 · 2017: 54 · 2016: 49 · 2015: 47 · 2014: 60 · 2013: 59 · 2012: 69
- FWCI
- 5.84
- Type
- book
- Language
- en
- Open access
- closed
- Licence
- Locations
- Springer eBooks (publishedVersion)
- CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
- Funders
- George Mason University
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Applications
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Noncommutative and Quantum Gravity Theories
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Relativity and Gravitational Theory
- Keywords
- Bell's theorem, quantum nonseparability, Bell inequalities, measurement problem, wave function collapse, weak values, hidden variables, locality, EPR paradox, quantum entanglement, quantum cosmology, inflation, cosmological singularity, quantum information, complementarity, quantum ontology, quantum foundations, cellular automata, phase-space model, separability
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