论文标题
在有吸引力的三成分费米斯（Fermions）中的库珀（Cooper Triples）
Cooper Triples in Attractive Three-Component Fermions: Implication for Hadron-Quark Crossover
论文作者
论文摘要
我们研究了人口稠密的三成分费米的多体性能，其中具有一个有吸引力的三体接触相互作用在一个维度上。一种示意方法表明，在低温下可能会出现库珀三元，这是库珀对的三体对应物，具有两体吸引力。我们开发了一个最小的框架，该框架将交叉从紧密结合的三聚体到库珀三元组桥接，并展示了库珀三元组的形成如何发生在宏伟的典型相图中。此外，我们认为这种非平凡的跨界与密集物质中提出的强子夸克跨界相似。中等诱导的三元组和阳性化学势的基础费米海的共存类似于夸克，包括夸克，包括重型刺激和下面的夸克费米海。与现有的量子蒙特卡洛结果的比较表明，这类三体状态的出现可以是沿交叉沿声速的峰值的微观起源。
We investigate many-body properties of equally populated three-component fermions with attractive three-body contact interaction in one dimension. A diagrammatic approach suggests the possible occurrence of Cooper triples at low temperature, which are three-body counterparts of Cooper pairs with a two-body attraction. We develop a minimal framework that bridges the crossover from tightly-bound trimers to Cooper triples with increasing chemical potential and show how the formation of Cooper triples occurs in the grand-canonical phase diagram. Moreover, we argue that this non-trivial crossover is similar to the hadron-quark crossover proposed in dense matter. A coexistence of medium-induced triples and the underlying Fermi sea at positive chemical potential is analogous to quarkyonic matter consisting of baryonic excitations and the underlying quark Fermi sea. The comparison with the existing quantum Monte Carlo results implies that the emergence of these kinds of three-body states can be a microscopic origin of the peak of the sound velocity along the crossover.
