玻茨模型
定义
玻茨模型的哈密頓量是:
其中 是晶格上的自旋变数, δ(si, sj) 是克罗内克函数。 当 si = sj 时,该函数等于1,否则等于0。
q=2的玻茨模型等于易辛模型(Jp = -2Jc )。
有时会引入磁场h:
参考文献
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