1ST-ORDER TRANSITION IN A SPIN-GLASS MODEL

被引：44

作者：

DACOSTA, FA ^{[1
]}

YOKOI, CSO ^{[1
]}

SALINAS, SRA ^{[1
]}

机构：

[1] UNIV SAO PAULO,INST FIS,BR-01498970 SAO PAULO,BRAZIL

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1994年 / 27卷 / 10期

关键词：

D O I：

10.1088/0305-4470/27/10/011

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider a generalization of the infinite-range Sherrington-Kirkpatrick spin glass model with arbitrary spin S and the inclusion of crystal-field effects. For integer S, replica-symmetric calculations have shown the presence of both continuous and discontinuous transitions and a tricritical point. For S = 1, we report a detailed numerical analysis of the replica-symmetric solutions. We locate the first-order boundary and clarify some inconsistencies of the previous analyses. Some analytic asymptotic expansions are used to support the numerical findings.

引用

页码：3365 / 3372

页数：8

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