Antoniou, Antonis and Thebault, Karim P Y (2023) Theories Without Models: Uncontrolled Idealizations in Particle Physics. [Preprint]
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Abstract
The perturbative treatment of realistic quantum field theories, such as quantum electrodynamics, requires the use of mathematical idealizations in the approximation series for scattering amplitudes. Such mathematical idealizations are necessary to derive empirically relevant models from the theory. Mathematical idealizations can be either controlled or uncontrolled, depending on whether current scientific knowledge can explain whether the effects of the idealization are negligible or not. Drawing upon negative formal results in asymptotic analysis (failure of Borel summability) and renormalization group theory (failure of asymptotic safety), we argue that the mathematical idealizations applied in perturbative quantum electrodynamics should be understood as uncontrolled. This, in turn, leads to the problematic conclusion that such theories do not have theoretical models in the standard understanding of this term. The existence of unquestionable empirically successful theories without theoretical models has significant implications both for our understanding of the theory-model relationship in physics and the concept of empirical adequacy.
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| Item Type: | Preprint | |||||||||
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| Keywords: | quantum field theory; idealization; empirical adequacy | |||||||||
| Subjects: | General Issues > Models and Idealization Specific Sciences > Physics > Quantum Field Theory General Issues > Structure of Theories |
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| Depositing User: | Dr Karim Thebault | |||||||||
| Date Deposited: | 14 Dec 2023 00:36 | |||||||||
| Last Modified: | 14 Dec 2023 00:36 | |||||||||
| Item ID: | 22856 | |||||||||
| Subjects: | General Issues > Models and Idealization Specific Sciences > Physics > Quantum Field Theory General Issues > Structure of Theories |
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| Date: | 13 December 2023 | |||||||||
| URI: | https://philsci-archive.pitt.edu/id/eprint/22856 |
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