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

Author

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  • Benyoussef, A.
  • Dohmi, D.
  • Elkenz, A.

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.

Suggested Citation

  • Benyoussef, A. & Dohmi, D. & Elkenz, A., 1998. "First-order transition in the l-component spin model with Gaussian random field," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 254(3), pages 466-476.
    • Handle: RePEc:eee:phsmap:v:254:y:1998:i:3:p:466-476
    DOI: 10.1016/S0378-4371(98)00066-1
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