| Issue |
Europhys. Lett.
Volume 72, Number 3, November 2005
|
|
|---|---|---|
| Page(s) | 472 - 478 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2005-10256-2 | |
| Published online | 05 October 2005 | |
Disorder chaos in spin glasses
1
Laboratoire PCT, UMR CNRS 7083, ESPCI - 10 rue Vauquelin, 75005 Paris, France
2
SPEC, Orme des Merisiers, CEA Saclay - 91191 Gif-sur-Yvette Cedex, France
3
Science & Finance, Capital Fund Management - 6-8 Bd Haussmann 75009 Paris, France
Received:
24
July
2005
Accepted:
13
September
2005
We investigate numerically disorder chaos in spin glasses, i.e. the
sensitivity of the ground state to small changes of the random couplings.
Our study focuses on the Edwards-Anderson model in 
and in
mean field. We find that in all cases, simple scaling laws, involving the
size of the system and the strength of the perturbation, are obeyed. We
characterize in detail the distribution of overlap between ground states and
the geometrical properties of flipped spin clusters in both the weak and
strong chaos regime. The possible relevance of these results to temperature
chaos is discussed.
PACS: 75.10.Nr – Spin-glass and other random models / 75.50.Lk – Spin glasses and other random magnets / 75.60.Nt – Magnetic annealing and temperature-hysteresis effects
© EDP Sciences, 2005
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