- 99-414 L. Chayes and K. Shtengel
- Lebowitz Inequalities for Ashkin--Teller Systems
(44K, AMS-TeX)
Nov 1, 99
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Abstract. We consider the Ashkin--Teller model with negative four-spin coupling
but still in the region where the ground state is ferromagnetic. We
establish the standard Lebowitz inequality as well as the extension
that is necessary to prove a divergent susceptibility.
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