Applying Quantum Tomography to Hadronic Interactions
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Issue Date
2022-07-14Author
Martens, J. C.
Ralston, J. P.
Tapia Takaki, D.
Publisher
SciPost
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
Copyright J. C. Martens et al. This work is licensed under the Creative Commons Attribution 4.0 International License. Published by the SciPost Foundation.
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A proper description of inclusive reactions is expressed with density matrices. Quantum tomography reconstructs density matrices from experimental observables. We review recent work that applies quantum tomography to practical experimental data analysis. Almost all field-theoretic formalism and modeling used in a traditional approach is circumvented with great efficiency. Tomographically-determined density matrices can express information about quantum systems which cannot in principle be expressed with distributions defined by classical probability. Topics such as entanglement and von Neumann entropy can be accessed using the same natural language where they are defined. A deep relation exists between {\it separability}, as defined in quantum information science, and {\it factorization}, as defined in high energyphysics. Factorization acquires a non-perturbative definition when expressed in terms of a conditional form of separability. An example illustrates how to go from data for momentum 4-vectors to a density matrix while bypassing almost all the formalism of the Standard Model.
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Citation
J. C. Martens, J. P. Ralston, D. Tapia Takaki. Applying Quantum Tomography to Hadronic Interactions. SciPost Phys. Proc. 8, 154 (2022), 14 July 2022, doi: 10.21468/SciPostPhysProc.8.154
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