巡游多粒子系统中的粒子分割纠缠
Particle partitioning entanglement in itinerant many-particle systems
摘要：
对于巡回费米和玻色子系统，我们研究“粒子纠缠”，定义为组成系统的两个粒子子集之间的纠缠。我们制定了一般结构的粒子纠缠在多费米子基态，类似于“面积法”的更通常研究的空间区域之间的纠缠。通过考虑相对简单的巡回模型，揭示了粒子纠缠的基本性质。
英文摘要：
For itinerant fermionic and bosonic systems, we study `particle entanglement', defined as the entanglement between two subsets of particles making up the system. We formulate the general structure of particle entanglement in many-fermion ground states, analogous to the `area law' for the more usually studied entanglement between spatial regions. Basic properties of particle entanglement are uncovered by considering relatively simple itinerant models.
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