Work

Gluon Entanglement Entropy inside a Nucleon: A Toy Model

Year: 2026

Type: preprint

Abstract: We construct a toy model of a nucleon, in which three static quarks interact via a SU(3) gauge field on a planar honeycomb lattice. The dynamics of the gauge field is described by the Kogut-Susskind Hamiltonian, truncated to the lowest three SU(3) irreducible representations. We show that the internal structure of the toy nucleon reflects salient features of the physical nucleon state. We then find the entanglement entropy of the gauge field within the nucleon state and compute its time evolution after a quench, in which all three valence quarks are suddenly removed. We show that the entanglement entropy in the final state is dominated by the dynamically generated contribution rather than the initial state entropy.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2605.11171

Authors: Horn, David, Müller, Berndt, Yao, Xiaojun

Institutions: Duke University, University of Washington

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, U.S. Department of Energy, University of Washington, National Energy Research Scientific Computing Center, Office of Science, Kavli Institute for Theoretical Physics, University of California, Santa Barbara, Nuclear Physics

Awards: G1201021787, G222768804, G2476331794, G3398237449, INQUBATOR FOR QUANTUM SIMULATIONS OF QUANTUM SYSTEMS ( IQUS2 ), INQUBATOR FOR QUANTUM SIMULATIONS OF QUANTUM SYSTEMS ( IQUS2 ), G4689434848, G4914481251, NUCLEAR PHYSICS AT EXTREME ENERGY DENSITY, NUCLEAR PHYSICS AT EXTREME ENERGY DENSITY, DFG-NSF Physics: Entanglement, Thermalization and Hadronization for SU(N) Gauge Theories, NUCLEAR PHYSICS AT HIGH ENERGY DENSITY, Kavli Institute for Theoretical Physics

OpenAlex ID: W7161003906

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