Non-existence of spontaneous magnetization in a one-dimensional Ising ferromagnet
Non-existence of spontaneous magnetization in a one-dimensional Ising ferromagnet
复制标题
一维伊辛铁磁体不存在自发磁化
DOI:
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发表时间:
1969
期刊:
影响因子:
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通讯作者:
F. Dyson
中科院分区:
文献类型:
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作者:
F. Dyson
AbstractIt is proved that an infinite linear chain of spins μj=±1, with an interaction energy
$$H = - \Sigma J(i - j)\mu _i \mu _j $$
has zero spontaneous magnetization at all finite temperatures, provided thatJ (n) is non-negative and that
$$H = - \Sigma J(i - j)\mu _i \mu _j $$
. This shows that a theorem ofRuelle, establishing the absence of long-range order when the sum Σn J (n) converges, is not the best possible.