SEARCH FOR A SPIN-GLASS PHASE IN FINITE-DIMENSIONAL SPIN MODELS WITH RANDOM MULTISITE INTERACTIONS

被引：15

作者：

RIEGER, H ^{[1
]}

机构：

[1] UNIV MARYLAND,INST PHYS SCI & TECHNOL,COLLEGE PK,MD 20742

来源：

PHYSICA A | 1992年 / 184卷 / 3-4期

关键词：

D O I：

10.1016/0378-4371(92)90306-B

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that in several two-dimensional models with random multisite interactions a spin glass transition cannot occur, since the disorder does not lead to an extensive number of frustrated terms in the Hamiltonian. We perform preliminary Monte Carlo simulations of the (three-dimensional) fcc lattice with random 4-spin interactions among the spins on elementary tetrahedra. The results indicate that either also here a spin glass transition is absent or it is preceded by a dynamical transition, where spin-spin correlations do not decay any more on finite time scales (in the infinite system). This latter scenario would occur with the mean-field result for p-spin interaction spin glasses.

引用

页码：279 / 289

页数：11

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