Energy landscape statistics of the random orthogonal model

被引：1
|
作者：
Esposti, MD [1 ]
Giardinà, C [1 ]
Graffi, S [1 ]
机构：
[1] Univ Bologna, Dipartimento Matemat, I-40127 Bologna, Italy
来源：
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 2003年 / 36卷 / 12期
关键词：
D O I：
10.1088/0305-4470/36/12/308
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The random orthogonal model (ROM) of Marinari-Parisi-Ritort [13, 14] is a model of statistical mechanics where the couplings among the spins are defined by a matrix chosen randomly within the orthogonal ensemble.. It reproduces the most relevant properties of the Parisi solution of the Sherrington-Kirkpatrick model. Here we compute the energy distribution, and work out an estimate for the two-point correlation function. Moreover, we show an exponential increase with the system size of the number of metastable states also for non-zero magnetic field.
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收藏
页码：2983 / 2994
页数：12
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