Quantum pions
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
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| _version_ | 1866918197458894848 |
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| author | Fabbrichesi, M. Floreanini, R. Gabrielli, E. Marzola, L. |
| author_facet | Fabbrichesi, M. Floreanini, R. Gabrielli, E. Marzola, L. |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_05464 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum pions Fabbrichesi, M. Floreanini, R. Gabrielli, E. Marzola, L. High Energy Physics - Phenomenology High Energy Physics - Experiment Quantum Physics 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. |
| title | Quantum pions |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Quantum Physics |
| url | https://arxiv.org/abs/2506.05464 |