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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

A recently proposed gedankenexperiment involving 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. However, it has been argued that, if the mediating fields are endowed with quantum properties, then the possibility for superluminal signaling is fully avoided. Moreover, in the gravitational case, this conclusion has been used to argue for the view that the gravitational field must be quantized. In this work, we point out various limitations to this and related assessments and we show that consideration of the way in which entanglement spreads across the system explains how superluminal communication is averted in this and related settings.


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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: 06 Dec 2022 13:50
Last Modified: 06 Dec 2022 13:50
Item ID: 21519
Subjects: Specific Sciences > Physics
Specific Sciences > Physics > Quantum Gravity
Specific Sciences > Physics > Quantum Mechanics
Specific Sciences > Physics > Relativity Theory
Date: 5 December 2022
URI: https://philsci-archive-dev.library.pitt.edu/id/eprint/21519

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