Related papers: $Λ\bar Λ$ spin correlations in high-energy collisions from quantum channels: an open quantum system view of hadronization

$Λ\bar Λ$ spin correlations in high-energy collisions from quantum channels: an open quantum system view of hadronization

URL: http://arxiv.org/abs/2606.30737v1
Date: Mon, 29 Jun 2026 18:00:05 GMT
Title: $Λ\bar Λ$ spin correlations in high-energy collisions from quantum channels: an open quantum system view of hadronization
Abstract summary: We construct a quantum information-centered approach to describe the experimentally observed behavior of hyperon spin-pair correlations.<n>We show that the experimental data are consistent with an evolution under a two-qubit depolarizing channel.
Score: 2.7513854849361157
License: http://creativecommons.org/licenses/by/4.0/
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 $\mathbb{C}^2\otimes\mathbb{C}^2$ 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.

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