Paramagnetic susceptibility and correlation functions of a -dimensional classical Heisenberg ferromagnet via the two-time Green function method

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• 作者：L.S. Campana^a ; A. Cavallo^b ; L. De Cesare^b ; U. Esposito^a ; A. Naddeo^c ; ^{adelenaddeo@yahoo.it}
• 关键词：Heisenberg model ; Two-time classical green functions ; Paramagnetic susceptibility
• 刊名：Physica A: Statistical Mechanics and its Applications
• 出版年：2017
• 出版时间：1 April 2017
• 年：2017
• 卷：471
• 期：Complete
• 页码：629-652
• 全文大小：599 K
• 卷排序：471

文摘

A dd-dimensional classical Heisenberg model with short-range interactions is studied. Asymptotic expressions for susceptibility and correlation functions are derived. A Fourier series expansion method for studying correlation functions is presented. This work is a reference for quantum counterparts emerging in the classical limit.