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Investigating entanglement entropy at small-x in DIS off protons and nuclei

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arxiv 2003.05008 v2 pith:E2E4O3DO submitted 2020-03-10 hep-ph quant-ph

G.S. Ramos , M.V.T. Machado This is my paper
classification hep-phquant-ph
keywords entanglemententropygluonnucleinumberprotonssmall-xamplitudes
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In this work we analyse the entanglement entropy in deep inelastic scattering off protons and nuclei. It is computed based on the formalism where the partonic state at small-x is maximally entangled with proton being constituted by large number of microstates occuring with equal probabilities. We consider analytical expressions for the number of gluons, N_{gluon}, obtained from gluon saturation models for the dipole-target amplitudes within the QCD color dipole picture. In particular, the nuclear entanglement entropy per nucleon is studied. We also study the underlying uncertainties on these calculations and compare the results to similar investigations in literature.

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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. Quantum entanglement within quarkonium

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Quark-antiquark entanglement entropy in quarkonium is derived from light-front wave functions, reduces to the Shannon entropy of TMDs, and shows strong polarization dependence for spin-1 mesons.

  2. Investigating QCD Dynamical Entropy in high-energy nuclear collisions

    hep-ph 2025-07 conditional novelty 4.0 of 10

    Using geometric scaling and Glauber-Gribov nuclear gluon distributions, the authors find that the QCD dynamical entropy in proton-nucleus collisions is essentially independent of the atomic mass number A, while the en...

  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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