De-excitation effects on entanglement in multi-nucleon transfer reactions
Phys. Rev. C 113, 044626 – Published 27 April, 2026
DOI: https://doi.org/10.1103/fl3l-fb88
Abstract
This study quantifies the impact of nuclear de-excitation on correlations in multi-nucleon transfer (MNT) reactions. To bridge the gap between initial collision dynamics and final experimental observables, we introduce a hybrid approach, integrating time-dependent covariant density functional theory with the statistical de-excitation model . Applied to the reaction, our method demonstrates that the de-excitation is essential for reconciling theoretical cross sections with experimental data. Analysis of the cross-section Shannon entropy reveals that new reaction channels open abruptly at a specific energy threshold. By employing mutual information, we show that the de-excitation process significantly degrades the initial quantum entanglement between the projectile-like and the target-like fragments, revealing a key mechanism through which fundamental quantum correlations are lost.