Topological Insulator — SSH Chain Edge States

Su-Schrieffer-Heeger model • Winding number topology • Protected zero-energy edge modes

Intracell hopping v0.50

Intercell hopping w1.50

Chain length N20

On-site disorder0.00

Winding number ν—

Band gap—

Phase—

Edge state energy—

SSH: H = Σ v·(a†_nb_n) + w·(b†_na_{n+1}) + h.c. | Topological: |w|>|v| → ν=1 → edge states | Trivial: |v|>|w| → ν=0