Author

Qun Wang

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Preprint Aug 2026

Spin correlation of hyperon-antihyperon systems in $e^+e^-$ annihilation

Quantum correlations in high-energy collisions provide a novel perspective on both fundamental physics and hadron structure. We calculate the quantum information observable in spin-1/2 particle-antiparticle systems produced in $e^+e^-$ annihilation. Starting from the two-qubit density operator, we calculate the Bell va...

Wenyu Zhang, Yang Li, Xiao-Rong Zhou et al. · 0 citations

Preprint Jul 2026

Quantum entanglement within quarkonium

We investigate quark-antiquark entanglement in heavy quarkonium within a nonperturbative light-front Hamiltonian framework. By tracing over the antiquark degrees of freedom in the hadronic state vector, we construct the reduced density matrix of the quark subsystem and compute the associated von Neumann entropy. For sp...

Wenyu Zhang, Yiyu Zhou, Yang Li et al. · 1 citation