Comment on “Estimating Excitonic Effects in the Absorption Spectra of Solids: Problems and Insight from a Guided Iteration Scheme”

Figure 1

Imaginary part of the dielectric function. Results obtained using the BSK are shown in black and those obtained using the RBO kernel are shown in green. Experimental curves are in pink.

Figure 2

(a) Imaginary part of the dielectric tensor as a function of energy (in eV). (b) Percentage deviation of the binding energy from experiments and (c) percentage deviation from experiment of ${\epsilon }_{\mathrm{M}}$. Results obtained using the BSK are shown in black and those obtained using the RBO kernel are shown in green. Experimental curves are in pink. The fundamental gap is indicated by the vertical blue line.