Figure 3From: Unconditionally energy stable second-order numerical scheme for the Allen–Cahn equation with a high-order polynomial free energy(a) Relative \(l_{2}\)-errors of \(\phi (x,t_{f})\) with different p for \(\Delta t=t_{f}/2^{12}, t_{f}/2^{11}, \ldots , t_{f}/2^{7}\) with \(\epsilon =0.02\) and \(\Delta x=\frac{1}{128}\). (b) CPU time versus time step with different pBack to article page