Figure 6
Electron-plasmon coupling as a function of the Wigner-Seitz radius r s . Red curve represents the numerical results obtained by the integration of Eqs (11 and 12), black curve denotes the analytical approximation. On the x-axis materials and their electron densities are additionally depicted. Horizontal lines denote values of a at which positions of main qp-peak and first plasmon satellite are obtained with at least 10% accuracy using the n th-order sc theory.
