First-order transition in the l-component spin model with Gaussian random field

A. Benyoussef, D. Dohmi and A. Elkenz

Physica A: Statistical Mechanics and its Applications, 1998, vol. 254, issue 3, 466-476

Abstract: Effects of a Gaussian random field on the phase transition of the l-component classical spin vector model are investigated using the replica technique. The phase diagrams are obtained in the cases l=1 and 3. In contrast to what has been predicted by Schneided and Pytte the results we obtained for l=1 and 3 show that the model exhibits a second-order, tricritical point and a first-order transition depending on the value of the random field.

Date: 1998
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:254:y:1998:i:3:p:466-476

DOI: 10.1016/S0378-4371(98)00066-1

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