On Sizes of Hadrons
High Energy Physics - Phenomenology
2026-03-17 v1
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.
Cite
@article{arxiv.2603.14352,
title = {On Sizes of Hadrons},
author = {Vladimir A. Petrov},
journal= {arXiv preprint arXiv:2603.14352},
year = {2026}
}