Fig. 13.

Contour plot of $c_{43}$ as a function of ${ϵ}_1$ and $\xi$. The remaining parameters are ${\gamma }_s=1∕7$, ${\gamma }_a=1∕21$ (fixed), $\mu =0.5$ (arbitrary) and ${\lambda }_{+}=0.302$, $\omega =0.074$ (determined by minimizing $c_6$). Darker colors are smaller values and lighter colors are higher values of the cost function. The blue canyon shaped region is where $c_{43}$ is close to its minimum. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)