论文标题
相互作用的Majorana Benalcazar-Bernevig-Hughes模型
Topological phases of an interacting Majorana Benalcazar-Bernevig-Hughes model
论文作者
论文摘要
我们研究了库仑排斥相互作用对Majorana benalcazar-Bernevig-Hughes（MBBH）模型的影响。 MBBH型号属于第二阶 - 拓扑超导体（$ hotsc_2 $），具有强大的Majorana角落模式。我们考虑了一个长度$ l $的四个链条的相互作用条，并基于张量 - 网络方法执行DMRG数值分析。对非局部费米子相关性和退化纠缠谱的研究表明，即使在相互作用的情况下，拓扑阶段也是强大的，即使在强烈的相互作用方向上也是如此。
We study the effects of Coulomb repulsive interactions on a Majorana Benalcazar-Bernevig-Hughes (MBBH) model. The MBBH model belongs to the class of second--order topological superconductors ($HOTSC_2$), featuring robust Majorana corner modes. We consider an interacting strip of four chains of length $L$ and perform a DMRG numerical analysis based on a tensor--network approach. Study of the nonlocal fermionic correlations and of the degenerate entanglement spectrum indicates that the topological phases are robust in the presence of interactions, even in the strongly interacting regime.
