Existence of a phase-transition is proved for an infinite linear chain of spins μj=±1, with an interaction energy {Mathematical expression} where J(n) is positive and monotone decreasing, and the sums ΣJ(n) and Σ (log log n) [n3J(n)]-1 both converge. In particular, as conjectured by Kac and Thompson, a transition exists for J(n)=n-α when 1 < α < 2. A possible extension of these results to Heisenberg ferromagnets is discussed. © 1969 Springer-Verlag.
CITATION STYLE
Dyson, F. J. (1969). Existence of a phase-transition in a one-dimensional Ising ferromagnet. Communications in Mathematical Physics, 12(2), 91–107. https://doi.org/10.1007/BF01645907
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