核裂变中的空间纠缠熵
Spatial Entanglement Entropy in Nuclear Fission
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中文总结 AI 辅助
该研究利用费米子高斯态公式计算核裂变轨迹的二分空间纠缠熵，发现其与碎片粒子数方差强相关，幻核碎片会抑制纠缠，将纠缠熵作为新视角拓展了核裂变的传统认知。
中文摘要 AI 辅助
核裂变展现了空间非定域多体纠缠的独特表现。我们利用费米子高斯态公式，沿动力学裂变轨迹精确计算了二分空间纠缠熵。在7种代表性裂变道中，最终纠缠熵与碎片的内禀粒子数方差强相关，但与断点几何无简单依赖关系。最值得注意的是，当碎片为幻核时，纠缠会被显著抑制，揭示了壳层反纠缠效应。本工作确立了纠缠熵作为一种新视角，拓展了对核裂变的传统认知。
英文摘要
Nuclear fission provides a unique manifestation of spatially nonlocal many-body entanglement. We compute the bipartite spatial entanglement entropy exactly along dynamical fission trajectories, by leveraging the fermionic Gaussian state formulation. Across seven representative fissioning channels, the final entanglement entropy correlates strongly with the intrinsic particle number variance of the fragment, yet exhibits no simple dependence on scission geometries. Most notably the entanglement is significantly suppressed when fragments are magic nuclei, revealing a shell anti-entanglement effect. This work establishes entanglement entropy as a novel lens that extends the conventional conception of nuclear fission.
