Explicit forms of zero modes in symmetric interacting Kitaev chain without and with dimerization

• 来源期刊: 中国物理B（英文版）
• 关键词: Majorana zero modes bosonic zero modes interacting Kitaev chain
• 年，卷（期）: 2018,（6）
• 页码范围: 353-356
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/6/067101

摘要

The fermionic and bosonic zero modes of the one-dimensional (1D) interacting Kitaev chain at the symmetric point are unveiled.The many-body structures of the Majorana zero modes in the topological region are given explicitly by carrying out a perturbation expansion up to infinite order.We also give the analytic expressions of the bosonic zero modes in the topologically trivial phase.Our results are generalized to the hybrid fermion system comprised of the interacting Kitaev model and the Su-Schrieffer-Heeger (SSH) model,in which we show that these two types of zero modes can coexist in a certain region of its phase diagram.