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arXiv · 2603.14352

On Sizes of Hadrons

Vladimir A. Petrov
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Abstract

Recently, various types of "radii" have been intensively discussed in the literature: "charge", "mass", "mechanical", "gravitational", etc. In my report, I analyze the definitions of quantities of such type in terms of matrix elements of local field operators and their relationship to physical (geometric) size. I also try to find out possible (if any) interpretation of the mentioned quantities and point out some serious conceptual difficulties related to the causality principle.

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Vladimir A. Petrov. 2026-03-15. On Sizes of Hadrons. https://arxiv.org/abs/2603.14352

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