Deriving a differential equation for the spin-spin correlation in Ising systems |
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| Authors: | Fu-bin Li |
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| Affiliation: | (1) World Laboratory, Center of Theoretical Physics of the Center of Chinese Advanced Science and Technology, P.O. Box 8730, 100080 Beijing, China;(2) Mathematical and Mechanical Department, China University of Mining Technology Xuzhou, 221008 Jiangsu, P. R. China |
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| Abstract: | Summary The equipartition theorem and the high-temperature expansion are used to derive a differential equation for the spin-spin correlation in Ising systems. Some applications of this equation including improved upper bound on the three-dimensional transition temperature and correlation length are discussed. Due to the relevance of its scientific content, this paper has been given priority by the Journal Direction. |
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| Keywords: | Statistical physics and thermodynamics |
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