Exact analytical edge states are derived for the extended SSH model, with bulk-boundary correspondence established via winding number and |z|=1 condition at gap closings.
For the states localized at the right end of the chain|z i|>1
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Exact analytical edge states in the extended Su-Schrieffer-Heeger model
Exact analytical edge states are derived for the extended SSH model, with bulk-boundary correspondence established via winding number and |z|=1 condition at gap closings.