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

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.

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Year of publication:	1998
Authors:	Benyoussef, A. ; Dohmi, D. ; Elkenz, A.
Published in:	Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 254.1998, 3, p. 466-476
Publisher:	Elsevier

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Type of publication:	Article
Source:	RePEc - Research Papers in Economics

Persistent link: https://www.econbiz.de/10010873115