| Numéro |
J. Phys. I France
Volume 4, Numéro 1, January 1994
|
|
|---|---|---|
| Page(s) | 139 - 146 | |
| DOI | https://doi.org/10.1051/jp1:1994127 | |
DOI: 10.1051/jp1:1994127
J. Phys. I France 4 (1994) 139-146
1 TCM Group, Cavendish Laboratory, Madingley Road, Cambridge CB3 OHE, U.K.
2 Service de Physique de l'Etat Condensé, Orme des Merisiers, CEA-Saclay, 91191 Gif s/Yvette cedex, France
© Les Editions de Physique 1994
J. Phys. I France 4 (1994) 139-146
Towards an experimental determination of the number of metastable states in spin-glasses?
J.P. Bouchaud1, 2, E. Vincent2 and J. Hammann21 TCM Group, Cavendish Laboratory, Madingley Road, Cambridge CB3 OHE, U.K.
2 Service de Physique de l'Etat Condensé, Orme des Merisiers, CEA-Saclay, 91191 Gif s/Yvette cedex, France
(Received 25 August 1993, accepted 15 October 1993)
Abstract
We argue that the systematic deviation from perfect aging (which
means that the relaxation function only depend on the ratio
,
where
is the waiting time) observed in spin-glasses can be
accounted for if the number of available metastable states is
finite. A significant fraction of these metastable states will
be visited after an "ergodic" time which we estimate from the
experiments to be
106 seconds. This corresponds
to
1012-1014
diffèrent metastable states per independent subsystem.
© Les Editions de Physique 1994