论文标题
Majorana边缘模型中的Majorana边缘模型
Majorana edge-modes in a spinful particle conserving model
论文作者
论文摘要
我们在相互作用的费米子梯子中显示了Majorana边缘模式的存在，并在一个保守的设置中旋转。链链单粒子跳被抑制，并且在梯子的不同链之间只有一对跳跃。此外，沿链的跳跃是旋转不平衡的，并且横向磁场被破坏时间转换不变性。我们研究了拓扑阶段在旋转和旋转费米子之间的现场相互作用以及跳跃旋转不平衡之间的鲁棒性。本工作的主要结果是，在存在相互作用的情况下，参数空间中有限区域的拓扑阶段生存。在现场相互作用是一种吸引力的情况下，本地化的Majorana边缘模式似乎更稳定。
We show the presence of Majorana edge modes in an interacting fermionic ladder with spin in a number conserved setting. The interchain single particle hopping is suppressed and only a pair hopping is present between the different chains of the ladder. Additionally, the hopping along the chains is spin imbalanced and a transverse magnetic field is applied breaking time-reversal invariance. We study the robustness of the topological phase with respect to an on-site interaction between the spin-up and spin-down fermions and the spin dependent imbalance of the hopping. The main result of the present work is that the topological phase survives for a finite region in the parameter space in the presence of interactions. The localized Majorana edge modes seems to be more stable in the case when the on-site interaction is an attraction.
