Figure 3
(a–c) The lowest four eigenvalues of the entanglement spectra, ξj = - ln ωj , correspoding to Fig. 2(a–c). Each line is labelled with the quantum numbers 
, where 
and PA = ±1. See also the last paragrpah of the section “Model Hamiltonian”. The insets of (b,c) are the zoom-in of (b,c). The vertical line denotes the critical point Δc ≈ 3.623 obtained by the energy derivatives.
