核系统的纠缠熵
Entanglement entropy of nuclear systems
AI总结：
本文研究核系统中空穴空间单粒子态与其补集间的纠缠熵，发现其与粒子数涨落和耗尽数成正比，且满足体积律，并通过配对模型、中子物质及有限核验证了这些结论。
摘要：
我们研究了核系统中空穴空间的单粒子态与其补集之间的纠缠熵。基于耦合簇方法的解析结果表明，在相互作用足够弱的情况下，纠缠熵与粒子数涨落和空穴空间的耗尽数成正比。一般性论证还表明，核系统中的纠缠熵满足体积律而非面积律。我们通过计算配对模型和中子物质的纠缠熵以及有限原子核的耗尽数来检验并证实了这些结果。
英文摘要：
We study entanglement entropies between the single-particle states of the hole space and its complement in nuclear systems. Analytical results based on the coupled-cluster method show that entanglement entropies are proportional to the particle number fluctuation and the depletion number of the hole space for sufficiently weak interactions. General arguments also suggest that the entanglement entropy in nuclear systems fulfills a volume instead of an area law. We test and confirm these results by computing entanglement entropies of the pairing model and neutron matter, and the depletion number of finite nuclei.
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