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arXiv · 0911.0982

Hubbard fermions band splitting at the strong intersite Coulomb interaction

Valery V. Val'kov·Maxim M. Korovushkin
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Abstract

The effect of the strong intersite Coulomb correlations on the formation of the electron structure of the t-V-model has been studied. A qualitatively new result has been obtained which consists in the occurrence of a split-off band of the Fermi states. The spectral intensity of this band increases with the enhancement of a doping level and is determined by the mean-square fluctuation of the occupation numbers. This leads to the qualitative change in the structure of the electron density of states.

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Valery V. Val'kov, Maxim M. Korovushkin. 2009-11-05. Hubbard fermions band splitting at the strong intersite Coulomb interaction. https://arxiv.org/abs/0911.0982

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