| Issue |
Europhys. Lett.
Volume 40, Number 4, November II 1997
|
|
|---|---|---|
| Page(s) | 429 - 434 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1997-00483-y | |
| Published online | 01 September 2002 | |
Evidence for nontrivial ground-state structure of 3d ± J spin glasses
Institut für Theoretische Physik, Philosophenweg 19,
69120 Heidelberg, Germany
Corresponding author: hartmann@tphys.uni-heidelberg.de
Received:
6
August
1997
Accepted:
12
October
1997
Ground states of 3d EA Ising spin glasses are calculated for sizes up to 143 using a combination of genetic algorithms and cluster-exact approximation. The generation of a large number of ground states allows the computation of the distribution P(|q|) of overlaps. For increasing size the width of P(|q|) converges to a nonzero value, indicating a nontrivial ground-state structure for short-range Ising spin glasses.
PACS: 75.10.Nr – Spin-glass and other random models / 75.40.Mg – Numerical simulation studies / 02.10.Jf – General mathematical systems
© EDP Sciences, 1997
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