ΛΛ̅ spin correlations in high-energy collisions from quantum channels: an open quantum system view of hadronization
Abstract
We construct a quantum information-centered approach to describe the experimentally observed behavior of hyperon spin-pair correlations in high-energy collider experiments. The evolution of the spin density matrix of the hyperon pair is treated in the language of quantum channels, accounting both for the spin dynamics in ℂ2⊗ℂ2 and for the pair's angular separation ΔR. We show that the experimental data are consistent with an evolution under a two-qubit depolarizing channel, from which a Lindblad master equation is derived. This provides an open quantum system picture of spin dynamics during the hadronization transition, which is not naturally captured by other quantum channels, and we discuss its microscopic origins. These results show that quantum information science can offer new insights into confinement dynamics beyond the classification of entanglement in the final particle states.
Versions
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BibTeX
@misc{barata2026λλ,
title = {{$Λ\bar Λ$ spin correlations in high-energy collisions from quantum channels: an open quantum system view of hadronization}},
author = {João Barata and Iván Cuntín and Enrique Rico and Bin Wu},
howpublished = {arXiv},
year = {2026},
month = jun,
doi = {10.48550/arxiv.2606.30737},
eprint = {2606.30737},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.30737},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - ΛΛ̅ spin correlations in high-energy collisions from quantum channels: an open quantum system view of hadronization
AU - João Barata
AU - Iván Cuntín
AU - Enrique Rico
AU - Bin Wu
PY - 2026
DA - 2026/06/29
PB - arXiv
DO - 10.48550/arxiv.2606.30737
UR - https://arxiv.org/abs/2606.30737
AB - We construct a quantum information-centered approach to describe the experimentally observed behavior of hyperon spin-pair correlations in high-energy collider experiments. The evolution of the spin density matrix of the hyperon pair is treated in the language of quantum channels, accounting both for the spin dynamics in ℂ^2⊗ℂ^2 and for the pair's angular separation ΔR. We show that the experimental data are consistent with an evolution under a two-qubit depolarizing channel, from which a Lindblad master equation is derived. This provides an open quantum system picture of spin dynamics during the hadronization transition, which is not naturally captured by other quantum channels, and we discuss its microscopic origins. These results show that quantum information science can offer new insights into confinement dynamics beyond the classification of entanglement in the final particle states.
ER -