This article is cited in 5 papers

On a possibility of using generalized Okubo operators to take into account correlations in the Hubbard model with degeneracy

A. V. Vedyaev, V. A. Ivanov, V. E. Shilov


Abstract: The two-orbital Hubbard modet with degeneracy and isotropic hopping integrals is considered. A systematic method is proposed for taking into account iutra-atomic correlations of the electrons by means of generalized Okubo tensor operators. The spectrum of electron excitations in a very simple case is calculated as an example.

Received: 03.09.1984

 English version: Theoretical and Mathematical Physics, 1985, 64:1, 756–761

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