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First-order transitions and triple point on a random p-spin interaction model

J. M. de Araujo·F. A. da Costa·F. D. Nobre
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Abstract

The effects of competing quadrupolar- and spin-glass orderings are investigated on a spin-1 Ising model with infinite-range random $p$-spin interactions. The model is studied through the replica approach and a phase diagram is obtained in the limit $p\to\infty$. The phase diagram, obtained within replica-symmetry breaking, exhibits a very unusual feature in magnetic models: three first-order transition lines meeting at a commom triple point, where all phases of the model coexist.

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J. M. de Araujo, F. A. da Costa, F. D. Nobre. 2000-04-28. First-order transitions and triple point on a random p-spin interaction model. https://doi.org/10.1088/0305-4470%2F33%2F10%2F303

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