论文标题
沉浸在双费米海中的杂质
An impurity immersed in a double Fermi Sea
论文作者
论文摘要
我们提出了杂质的能量的变异计算，这是浸入非相互作用费米子的双重费米海。我们表明，在强耦合方案中，该系统在极化状态和三聚体状态之间进行了一阶转变。我们的结果表明，以前文献中预测的超氟背景的平滑跨界是库珀配对的结果，在正常系统中不存在。
We present a variational calculation of the energy of an impurity immersed a double Fermi sea of non-interacting Fermions. We show that in the strong-coupling regime, the system undergoes a first order transition between polaronic and trimer states. Our result suggests that the smooth crossover predicted in previous literature for a superfluid background is the consequence of Cooper pairing and is absent in a normal system.
