Fig. 12

Reflection of a potential function. The blue line = the vertical axis, which denotes the energy of the function at each averaged relative phase. The horizontal axis indicates the averaged relative phase between two limbs from in-phase 0 to anti-phase 3.14 = 180 (− 3.14 = − 180). At the local point 0 and 180 (− 180), the function close to those minima (attractors, black balls) and at local point around 90 (− 90), the state is close to maxima (repellors, red balls). The red and green lines denote the variation of the potential functions