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Phase diagrams of soluble multi-spin glass models

✍ Scribed by P.T. Muzy; A.P. Vieira; S.R. Salinas

Publisher: Elsevier Science
Year: 2006
Tongue: English
Weight: 403 KB
Volume: 359
Category: Article
ISSN: 0378-4371
DOI: 10.1016/j.physa.2005.05.091

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✦ Synopsis

We include p-spin interactions in a spherical version of a soluble mean-field spin-glass model proposed by van Hemmen. Due to the simplicity of the solutions, which do not require the use of the replica trick, we are able to carry out a detailed investigation of a number of special situations. For pX3, there appear first-order transitions between the paramagnetic and the ordered phases. In the presence of additional ferromagnetic interactions, we show that there is no stable mixed phase, with both ferromagnetic and spin-glass properties.

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