Influence of Deformation on the Energy Spectrum and the Optical Properties of Fullerene C20 within the Hubbard Model

Resumo

The anticommutative Green’s functions and energy spectra of fullerene C₂₀ with symmetry groups I_h, D_5d, and D_3d have been obtained in analytical form within the Hubbard model in the mean-field approximation. The methods of group theory have been used to classify energy states and identify allowed transitions in the energy spectra of C₂₀.