Editor-in-Chief: Seidel, Sally
Managing Editor: Lesna-Szreter, Paulina
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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.
Keywords: Hubbard model; half-filling; spectral function; density of states; redistribution of spectral weight
Keywords: 71.10.Fd
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Published Online: 2003-09-01
Published in Print: 2003-09-01
Citation Information: Open Physics, Volume 1, Issue 3, Pages 421–431, ISSN (Online) 2391-5471, DOI: https://doi.org/10.2478/BF02475853.
© 2003 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0
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