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JOURNALS // University proceedings. Volga region. Physical and mathematical sciences // Archive

University proceedings. Volga region. Physical and mathematical sciences, 2011 Issue 4, Pages 86–100 (Mi ivpnz601)

This article is cited in 4 papers

Physics

Hubbard model in the approximation of static fluctuations

A. V. Silant'ev

Mari State University, Yoshkar Ola

Abstract: The author has developed a method of statical fluctuations to be applied to the Hubbard model and nanosystems. The researcher has calculated anticommutator Green functions of the Hubbard two sublattices model, pentagon, hexagon, dimer and fullerene $Ñ_{60}$ through static fluctuations approximation. The article shows that electron concentration at different sites of the Hubbard two sublattices model varies.

Keywords: Hubbard model, Green functions, energy spectrum, nanosystems, hexagon, pentagon, dimer and fullerene $Ñ_{60}$.

UDC: 538.1



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