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  1. 1 Open Physics

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  1. 1 2003

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  1. 1 Ovchinnikov S.

  2. 1 Shneyder E.

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Electron spectral density of the half-filled Hubbard model in the atomic limit at finite temperature

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Ovchinnikov S., Shneyder E.
Open Physics
|
2003
|
vol. 1
|
issue 3
421-431
EN
We have calculated the spectral function and density of states of halffilled two-dimensional Hubbard model in the Hubbard-I approximation assuming an antiferromagnetic long range order at low temperature and compared results to the QMC data. It occurs that calculated functions are in a qualitative agreement with the QMC one. We have also shown that Neel ordered state dispersion has the similar form to the spin density wave one.
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