Quantum pions
High Energy Physics - Phenomenology
2025-11-13 v1 High Energy Physics - Experiment
Quantum Physics
Abstract
We show that two- and three-pion states produced in the decay of neutral kaons are contextual, entangled, and Bell nonlocal in isospin space. By reinterpreting the experimental values of the different isospin amplitudes, we can determine the amount of entanglement enjoyed by these states and the extent to which they violate the non-contextuality and Bell locality inequalities. Notably, the three-pion state offers a genuine multipartite test of Bell nonlocality with qutrits.
Keywords
Cite
@article{arxiv.2506.05464,
title = {Quantum pions},
author = {M. Fabbrichesi and R. Floreanini and E. Gabrielli and L. Marzola},
journal= {arXiv preprint arXiv:2506.05464},
year = {2025}
}
Comments
5 pages, 2 figures