A short description, analysis, and comparison of four different methods used for calculation of the Green’s functions for the Hubbard model in the approximation of static fluctuations are presented. The Green’s functions in the approximation of static fluctuations are calculated for fullerene С60, and three main optical С60 absorption bands are interpreted.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 70–79, February, 2013.
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Silant’ev, A.V. The Hubbard model of fullerene С60 . Russ Phys J 56, 192–203 (2013). https://doi.org/10.1007/s11182-013-0015-7
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DOI: https://doi.org/10.1007/s11182-013-0015-7