Quantum Theory without the Axiom of Choice, and Lefschetz Quantum Physics

In this paper, we discuss quantum formalisms that do not use the axiom of choice. We also consider the fundamental problem that addresses the (in)correctness of having the complex numbers as the base field for Hilbert spaces in the København interpretation of quantum theory, and propose a new approa...

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Main Author: Koen Thas
Format: Article
Language:English
Published: MDPI AG 2023-12-01
Series:Physics
Subjects:
Online Access:https://www.mdpi.com/2624-8174/5/4/72
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author Koen Thas
author_facet Koen Thas
author_sort Koen Thas
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description In this paper, we discuss quantum formalisms that do not use the axiom of choice. We also consider the fundamental problem that addresses the (in)correctness of having the complex numbers as the base field for Hilbert spaces in the København interpretation of quantum theory, and propose a new approach to this problem (based on the Lefschetz principle). Rather than a theorem–proof paper, this paper describes two new research programs on the foundational level, and focuses on basic open questions that arise in these programs.
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spelling doaj.art-267aeb4d81104e749f7c4acf53c2f4e02023-12-22T14:33:13ZengMDPI AGPhysics2624-81742023-12-01541109112510.3390/physics5040072Quantum Theory without the Axiom of Choice, and Lefschetz Quantum PhysicsKoen Thas0Department of Mathematics, Algebra and Geometry, Ghent University, Krijgslaan 281, S25, B-9000 Ghent, BelgiumIn this paper, we discuss quantum formalisms that do not use the axiom of choice. We also consider the fundamental problem that addresses the (in)correctness of having the complex numbers as the base field for Hilbert spaces in the København interpretation of quantum theory, and propose a new approach to this problem (based on the Lefschetz principle). Rather than a theorem–proof paper, this paper describes two new research programs on the foundational level, and focuses on basic open questions that arise in these programs.https://www.mdpi.com/2624-8174/5/4/72modal quantum theoryaxiom of choiceLefschetz principlefoundations of quantum theorythought experiments
spellingShingle Koen Thas
Quantum Theory without the Axiom of Choice, and Lefschetz Quantum Physics
Physics
modal quantum theory
axiom of choice
Lefschetz principle
foundations of quantum theory
thought experiments
title Quantum Theory without the Axiom of Choice, and Lefschetz Quantum Physics
title_full Quantum Theory without the Axiom of Choice, and Lefschetz Quantum Physics
title_fullStr Quantum Theory without the Axiom of Choice, and Lefschetz Quantum Physics
title_full_unstemmed Quantum Theory without the Axiom of Choice, and Lefschetz Quantum Physics
title_short Quantum Theory without the Axiom of Choice, and Lefschetz Quantum Physics
title_sort quantum theory without the axiom of choice and lefschetz quantum physics
topic modal quantum theory
axiom of choice
Lefschetz principle
foundations of quantum theory
thought experiments
url https://www.mdpi.com/2624-8174/5/4/72
work_keys_str_mv AT koenthas quantumtheorywithouttheaxiomofchoiceandlefschetzquantumphysics