Figure 7
From: Topologically protected localised states in spin chains
Energy splitting between the unperturbed (black lines) and one preturbed realisation with E = 0.1 (dashed) of the states of a case (a) N = 21 chain. We note that for a single realisation the energy of the localised state can shift either up or down but will remain in the gap (see averaged case shown in Fig. 5).
