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Quantum Physics

arXiv:2111.07983 (quant-ph)
[Submitted on 15 Nov 2021]

Title:Quantum Information in Relativity: the Challenge of QFT Measurements

Authors:Charis Anastopoulos, Ntina Savvidou
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Abstract:Proposed quantum experiments in deep space will be able to explore quantum information issues in regimes where relativistic effects are important. In this essay, we argue that a proper extension of Quantum Information theory into the relativistic domain requires the expression of all informational notions in terms of quantum field theoretic (QFT) concepts. This task requires a working and practicable theory of QFT measurements. We present the foundational problems in constructing such a theory, especially in relation to longstanding causality and locality issues in the foundations of QFT. Finally, we present the ongoing Quantum Temporal Probabilities program for constructing a measurement theory that (i) works, in principle, for any QFT, (ii) allows for a first-principles investigation of all relevant issues of causality and locality, and (iii) it can be directly applied to experiments of current interest.
Comments: 22 pages, prepared for Entropy special issue "Quantum Information in Quantum Gravity"
Subjects: Quantum Physics (quant-ph); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Theory (hep-th)
Cite as: arXiv:2111.07983 [quant-ph]
  (or arXiv:2111.07983v1 [quant-ph] for this version)
  https://doi.org/10.48550/arXiv.2111.07983
Related DOI: https://doi.org/10.3390/e24010004

Submission history

From: Charis Anastopoulos [view email]
[v1] Mon, 15 Nov 2021 18:48:42 UTC (48 KB)
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