Abstract
The first ten terms of the high-temperature expansion of the susceptibility of the single-band Hubbard model in the strong correlation limit are obtained for arbitrary electron density. The series is analyzed by ratio methods and Padé approximants. A critical temperature is found for 0.2 ⩽ρ ⩽ 0.8; forρ > 1 further terms in the series are required.
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Supported in part by the National Research Council of Canada.
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Plischke, M. Ferromagnetism in the single-band Hubbard model: An exact high-temperature expansion. J Stat Phys 11, 159–167 (1974). https://doi.org/10.1007/BF01012517
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DOI: https://doi.org/10.1007/BF01012517