Activated processes and Inherent Structure dynamics of finite-size mean-field models for glasses

被引:36
作者
Crisanti, A
Ritort, F
机构
[1] Univ Rome La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[2] Univ Rome 1, INFM, I-00185 Rome, Italy
[3] Univ Barcelona, Fac Phys, Dept Phys, E-08028 Barcelona, Spain
来源
EUROPHYSICS LETTERS | 2000年 / 52卷 / 06期
关键词
D O I
10.1209/epl/i2000-00486-2
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We investigate the Inherent Structure (IS) dynamics of mean-field finite-size spin-glass models whose high-temperature dynamics is described in the thermodynamic limit by the schematic Mode Coupling Theory for supercooled liquids, Near the threshold energy the dynamics is ruled by activated processes which induce a logarithmic slow relaxation. We show the presence of aging in both the IS correlation and integrated response functions and check the validity of the one-step replica symmetry breaking scenario in the presence of activated processes. Our work shows: 1) the violation of the fluctuation-dissipation theorem can be computed from the configurational entropy obtained in the Stillinger and Weber approach, 2) the intermediate time regime (log(t) similar to N) in mean-field theory automatically includes activated processes opening the way to analytically investigate activated processes by computing corrections beyond mean field.
引用
收藏
页码:640 / 646
页数:7
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