Spin-orbit entanglement in the Color Glass Condensate

Bhattacharya, Shohini; Boussarie, Renaud; Hatta, Yoshitaka

doi:10.1016/j.physletb.2024.139134

Title: Spin-orbit entanglement in the Color Glass Condensate

Journal Article · 14 November 2024 · Physics Letters. B

DOI: https://doi.org/10.1016/j.physletb.2024.139134 · OSTI ID:2477962

Bhattacharya, Shohini ^[1]; Boussarie, Renaud ^[2];

^[3]

Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Ecole Polytechnique Federale Lausanne (EPFL) (Switzerland). Centre de physique théorique de l'École polytechnique (CPHT); Centre National de la Recherche Scientifique (CNRS) (France); Institut Polytechnique de Paris, Palaiseau (France)
Brookhaven National Laboratory (BNL), Upton, NY (United States). RIKEN Research Center

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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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: SC0012704; 89233218CNA000001

OSTI ID:: 2477962

Report Number(s):: BNL--226362-2024-JAAM

Journal Information:: Physics Letters. B, Journal Name: Physics Letters. B Vol. 859; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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