The two-dimensional site-diluted Ising model: a short-time-dynamics approach

被引：6
|
作者：
da Silva, L. F. [3 ]
Fulco, U. L. [4 ]
Nobre, F. D. [1 ,2 ]
机构：
[1] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil
[2] Natl Inst Sci & Technol Complex Syst, BR-22290180 Rio De Janeiro, Brazil
[3] Univ Fed Rio Grande do Norte, Dept Fis Teor & Expt, BR-59072970 Natal, RN, Brazil
[4] Univ Fed Rio Grande do Norte, Dept Biofis & Farmacol, BR-59072970 Natal, RN, Brazil
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2009年 / 21卷 / 34期
关键词：
CARLO RENORMALIZATION-GROUP; CRITICAL-BEHAVIOR; MONTE-CARLO; CRITICAL EXPONENTS; CRITICAL RELAXATION; ENSEMBLE APPROACH; SYSTEMS; FERROMAGNETS; UNIVERSALITY;
D O I：
10.1088/0953-8984/21/34/346005
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The site-diluted Ising ferromagnet is investigated on a square lattice, within short-time-dynamics numerical simulations, for different site concentrations. The dynamical exponents. and z are obtained and it is shown that these exponents do depend strongly on the disorder, exhibiting a clear breakdown of universality, characterized by relative variations of nearly 100% in the range of site concentrations investigated. In what concerns the static exponents beta and nu, universality is preserved within the error bars.
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页数：7
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