Studying Maximal Entanglement and Bell Nonlocality at an Electron-Ion Collider

• URL: http://arxiv.org/abs/2506.12889v2
• Date: Sun, 22 Jun 2025 17:10:02 GMT
• Title: Studying Maximal Entanglement and Bell Nonlocality at an Electron-Ion Collider
• Authors: Wei Qi, Zijing Guo, Bo-Wen Xiao,
• Abstract summary: We find that longitudinally polarized photons produce maximal entanglement at leading order, while transversely polarized photons generate significant entanglement near the threshold.<n>Compared to hadron colliders, the EIC provides a cleaner experimental environment for measuring entanglement.<n>This study extends entanglement measurements to the EIC, presenting new opportunities to explore the interplay of quantum information phenomena and hadronic physics.
• Score: 1.7500961395463588
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this paper, we propose to test quantum entanglement and Bell nonlocality at an Electron-Ion Collider (EIC). By computing the spin correlations in quark-antiquark pairs produced via photon-gluon fusion, we find that longitudinally polarized photons produce maximal entanglement at leading order, while transversely polarized photons generate significant entanglement near the threshold and in the ultra-relativistic regime. Compared to hadron colliders, the EIC provides a cleaner experimental environment for measuring entanglement through the $\gamma^\ast g \to q\bar{q}$ channel, offering a strong signal and a promising avenue to verify Bell nonlocality. This study extends entanglement measurements to the EIC, presenting new opportunities to explore the interplay of quantum information phenomena and hadronic physics in the EIC era.

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