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Quantum spatial superpositions and the possibility of superluminal signaling

Ávila, Partricio and Okon, Elias and Sudarsky, Daniel and Wiedemann, Martín (2022) Quantum spatial superpositions and the possibility of superluminal signaling. [Preprint]

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Abstract

Mari et al. [Sci. Rep. 6, 22777 (2016)] and Belenchia et al. [Phys. Rev. D 98, 126009 (2018)] explore a gedankenexperiment in which the (gravitational or electromagnetic) interaction between two objects, one placed in a state of quantum superposition of two locations, seems to allow for faster-than-light communication. Building on the analysis carried out in Mari et al. [Sci. Rep. 6, 22777 (2016).], Belenchia et al. [Phys. Rev. D 98, 126009 (2018)] argue that, by considering the quantization of radiation and the existence of vacuum quantum fluctuations of the fields, the apparent possibility of superluminal signaling is completely avoided. Moreover, in the gravitational case, such a conclusion is taken as providing support for the view that gravity must necessarily have a quantum nature. In this work, we reconsider the situation and find several limitations of these assessments.


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Item Type: Preprint
Creators:
CreatorsEmailORCID
Ávila, Partricio
Okon, Eliaseokon@filosoficas.unam.mx
Sudarsky, Danielsudarsky@nucleares.unam.mx
Wiedemann, Martín
Keywords: Superluminal signaling; semiclassical gravity; quantum gravity; quantum superpositions; gedankenexperiments; quantum vacuum fluctuations.
Subjects: Specific Sciences > Physics
Specific Sciences > Physics > Quantum Gravity
Specific Sciences > Physics > Quantum Mechanics
Specific Sciences > Physics > Relativity Theory
Depositing User: Dr. Elias Okon
Date Deposited: 10 Apr 2022 18:33
Last Modified: 10 Apr 2022 18:33
Item ID: 20429
Subjects: Specific Sciences > Physics
Specific Sciences > Physics > Quantum Gravity
Specific Sciences > Physics > Quantum Mechanics
Specific Sciences > Physics > Relativity Theory
Date: 3 April 2022
URI: http://philsci-archive.pitt.edu/id/eprint/20429

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