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arXiv · 2604.11697

Quantum entanglement in electron-nucleus collisions: Role of the linearly polarized gluon distribution

Michael Fucilla·Yoshitaka Hatta·Bo-Wen Xiao
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Abstract

We calculate the spin density matrix of a back-to-back quark-antiquark pair inclusively produced in electron-nucleus scattering, taking into account the gluon saturation effect and the linearly polarized gluon distribution. We then investigate concurrence and stabilizer R\'enyi entropy, quantifying entanglement, Bell-nonlocality, and magic. We find that the linearly polarized gluon distribution tends to enhance the entanglement of a heavy quark pair when the total and relative transverse momenta of the pair are orthogonal.

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Michael Fucilla, Yoshitaka Hatta, Bo-Wen Xiao. 2026-04-13. Quantum entanglement in electron-nucleus collisions: Role of the linearly polarized gluon distribution. https://arxiv.org/abs/2604.11697

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