Figure 4

[Sub-case I(d)] (a) An anti-kink \(\Phi\) and (b) its corresponding electric field (E) are depicted in the \(\xi - \tau\) plane. Upon a space reversal(\(\xi \rightarrow -\xi\)), the left panels (a, b) take the form of the right panels (c, d). Arbitrary fixed values \(A = B = -1\) and \(C=1\) have been considered.