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Spin-orbit entanglement in the Color Glass Condensate

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arxiv 2404.04208 v2 pith:PN4STPTX submitted 2024-04-05 hep-ph

Shohini Bhattacharya , Renaud Boussarie , Yoshitaka Hatta This is my paper · ORCID
classification hep-ph
keywords gluonsangularcolorcondensateglasshelicitymomentumorbital
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abstract

We compute the spin-orbit correlations of quarks and gluons at small-$x$ and show that the helicity and the orbital angular momentum of individual partons are strongly anti-aligned even in unpolarized or spinless hadrons and nuclei. Combined with the fact that gluons in the Color Glass Condensate are linearly polarized, our finding indicates that the helicity and the orbital angular momentum of single gluons are maximally entangled in a quantum mechanical sense.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Gluon Generalized TMD signatures at the EIC from exclusive heavy (axial-)vector meson production

    hep-ph 2026-01 conditional novelty 6.0 of 10

    Exclusive heavy vector-meson electroproduction can yield cos2φ and sin2φ azimuthal asymmetries whose coefficients contain moments of gluon GTMDs F_{1,4} and G_{1,1}.

  2. Internal color contributions to flux tube entanglement entropy

    hep-lat 2025-02 conditional novelty 6.0 of 10

    Preliminary lattice data support the conjecture that the internal color entanglement entropy of a flux tube equals <F> log N_c, where <F> is the average number of boundary crossings.

  3. Entanglement Negativity of Spin-Orbit Correlations in a general Qubit-Qudit Setup

    hep-ph 2025-05 conditional novelty 3.0 of 10

    For any pure qubit-qudit state, the negativity of the partial transpose equals the square root of the determinant of the two-by-two reduced density matrix, which the paper applies to spin-orbit entanglement in protons.

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