Webb(a) Quench in the SSH model and (b) the single-particle ES dynamics. The red solid and blue dashed curves correspond to L = ∞ and L = 2l, respectively. In the former case, the … http://phyx.readthedocs.io/en/latest/TI/Lecture%20notes/1.html

A topological analysis of the Su-Schrieffer-Heeger model

WebbThe Su-Schrieffer-Heeger model, or SSH model for short, is in a sense one of the simplest models of topology and the resulting edge states (the bulk-boundary correspondence), so a full analysis of it helps to shed light on other models in higher dimension with topologies that might be a little harder to imagine. WebbThe inversion symmetry in the SSH model (equivalently, reflection symmetry or 180-degree rotation symmetry) is best understood by taking Fig. 1 and flattening it out as in Fig. 5 … theoretical time formula

Slow quenches in two-dimensional time-reversal symmetric

Webb30 maj 2024 · The Su–Schrieffer–Heeger (SSH) model perhaps is the easiest and the most basic model for topological excitations. Many variations and extensions of the SSH … WebbSSH模型简单来说可以理解为电子在一列一位的点阵上跃迁，有两种不同的幅度交替排列分别用 v,w 表示胞内和胞外跃迁幅度，为了方便我们将每个元胞中处在左边的格点用 A 表示，处在右边的用 B 表示 书上的图 在不考虑电子相互作用的情况下，可以写出单电子的哈密顿量 \hat {H}=v\sum_ {m=1}^N ( m,B\rangle\langle m,A + m,A\rangle\langle … Webb19 juli 2024 · The discrete Hamiltonian of Su, Schrieffer and Heeger (SSH) is a well-known one-dimensional translation-invariant model in condensed matter physics. The model consists of two atoms per unit cell and describes in-cell and out-of-cell electron-hopping between two sub-lattices. theoretical tools examples