Figure 1
From: Dynamical Quantum Phase Transition and Quasi Particle Excitation

(a) Lines of Fisher zeros in the complex plane (z) for a quench across the gapped to gapless quantum phase transition point at \({h}_{s}^{c}=2\), (\({h}_{s}^{(1)}=2.5\), \({h}_{s}^{(2)}=1.5\)). (b) Lines of Fisher zeroes for a quench within the same phase (Spin Liquid) crossing the non-critical point hc = 0 (\({h}_{s}^{(1)}=0.25\), \({h}_{s}^{(2)}=-\,0.25\)).