Fig. 3: Results for the fermionic ladder.
From: Efficient quantum information probes of nonequilibrium quantum criticality
a Tentative finite-sized phase diagram, showing a ballistic (Ball), diffusive (Diff), and super-diffusive (S. Diff) regimes. Phase boundaries lines are based on the largest converged system size. The symbols give the location of the peaks in f for different system sizes showcasing the drift of Vc1 and Vc2. b Comparison of the real space occupations between the ballistic phase at V = 0.05 (continuous), the diffusive at V = 3.0 (dashed) and the super-diffusive at V = 0.7 (dotted); all for η = 0.05. For the super-diffusive case (dotted) we showed 1 − nr to avoid overlapping the curves. c Comparison of the L dependence of the current for the different regimes, with η = 0.05. The straight lines serve as guides to the eye for the power-law behavior of the diffusive and super-diffusive phases. d \({\chi }_{{{{\mathcal{A}}}}}^{VV}/L\) vs V for different system sizes at η = 0.1 and with δV = 0.2, detecting a transition from a ballistic to a diffusive phase, while crossing an intermediate super-diffusive regime. The color code for figures d–f is given in f. e and f showcase G and − ∂VG (finite differences) vs V for different L and η = 0.1, with the result in f smoothed with a low-pass filter to remove high-frequency noise.
