Abstract
We consider an asymmetric d-dimensional, d>1, Ising model with the pair interaction I in one direction different from the pair interaction J in all other directions. We show that for any inverse temperature β the system is in the gas phase as soon as |J|<Cβ −1 d −2(1−tanh(β |I|)) with C>0 being a small numeric constant.
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Mazel, A., Procacci, A. & Scoppola, B. Gas Phase of Asymmetric Nearest Neighbor Ising Model. Journal of Statistical Physics 106, 1241–1248 (2002). https://doi.org/10.1023/A:1014002323607
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DOI: https://doi.org/10.1023/A:1014002323607