Would the Existence of CTCs Allow for Nonlocal Signaling?
A recent paper from Brun et al. has argued that access to a closed timelike curve (CTC) would allow for the possibility of perfectly distinguishing nonorthogonal quantum states. This result can be used to develop a protocol for instantaneous nonlocal signaling. Several commenters have argued that no...
| Published in: | Erkenntnis Vol. 84; no. 1; pp. 215 - 235 |
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| Format: | Article |
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Springer Nature
Feb2019
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=134610504&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 134610504 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 01650106 5KZ jtl: Erkenntnis issn: 01650106 maglogo: N pubinfo: dt: Feb2019 vid: 84 iid: 1 pid: 237 pub: Springer Nature artinfo: ui: 134610504 10.1007/s10670-017-9955-6 ppf: 215 ppct: 20 formats: fmt: – @attributes: type: T – @attributes: type: P size: 737KB tig: atl: Would the Existence of CTCs Allow for Nonlocal Signaling? aug: au: Dunlap, Lucas affil: Rotman Institute of Philosophy, University of Western Ontario, Stevenson Hall 2150, N6A 5B8, London, ON, Canada su: Quantum states Quantum information theory Quantum mechanics Qubits sug: subj: Quantum states Quantum information theory Quantum mechanics Qubits ab: A recent paper from Brun et al. has argued that access to a closed timelike curve (CTC) would allow for the possibility of perfectly distinguishing nonorthogonal quantum states. This result can be used to develop a protocol for instantaneous nonlocal signaling. Several commenters have argued that nonlocal signaling must fail in this and in similar cases, often citing consistency with relativity as the justification. I argue that this objection fails to rule out nonlocal signaling in the presence of a CTC. I argue that the reason these authors are motivated to exclude the prediction of nonlocal signaling is because the No Signaling principle is considered to a fundamental part of the formulation of the quantum information approach. I draw out the relationship between nonlocal signaling, quantum information, and relativity, and argue that the principle theory formulation of quantum mechanics, which is at the foundation of the quantum information approach, is in tension with foundational assumptions of Deutsch's D-CTC model, on which this protocol is based. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y custom: Erkenntnis is a copyright of Springer, 2019. All Rights Reserved. item: Erkenntnis holder: Springer Nature dt: @attributes: year: 2019 holdings: @attributes: islocal: N |
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