论文标题
相互作用的非热系统的皮肤效应和激发光谱
Skin effect and excitation spectral of interacting non-Hermitian system
论文作者
论文摘要
通过精确的对角化研究了具有相互作用术语的非热su-Schrieffer-Heeger无旋转费用模型。该模型源自与Damping Dzyaloshinskii-Moriya相互作用的自旋链。相互作用的存在诱导异常光谱函数。皮肤效应由绿色功能（即空间相关）的非对角线术语表现出来。这种交互修改了基态和半填充系统的第一个激发状态之间的变性，以及一半和一半加一个填充系统之间的基底状态。拓扑状态内较高激发态的能带具有复杂的模式，具体取决于相互作用的符号和振幅。
The non-Hermitian Su-Schrieffer-Heeger spinless Fermion model with interacting terms is studied by exact diagonalization. The model is derived from the spin chain with damping Dzyaloshinskii-Moriya interaction. The presence of the interaction induce anomalous spectral function. The skin effect is exhibited by the non-diagonal terms of the Green's function, i.e. the spatial correlation. The interaction modifies the degeneracy between the ground state and the first excited state of the half filled systems, as well as between the ground state of the half and half plus one filled systems. The energy bands of the higher excited states within the topological regime have complicated pattern, depending on the sign and amplitude of the interaction.
