Volume 58, Number 6, June 2002
|Page(s)||892 - 898|
|Section||Condensed matter: structure, mechanical and thermal properties|
|Published online||01 June 2002|
Modified TAP equations for the SK spin glass
Theoretische Festkörperphysik, TU Darmstadt - D
64289 Darmstadt, Germany
Accepted: 20 March 2002
The stability of the TAP mean-field equations is reanalyzed with the conclusion that the exclusive reason for the breakdown at the spin glass instability is an inconsistency for the value of the local susceptibility. A new alternative approach leads to modified equations which are in complete agreement with the original ones above the instability. Essentially altered results below the instability are presented and the consequences for the dynamical mean-field equations are discussed.
PACS: 75.10.Nr – Spin-glass and other random models / 84.35.+i – Neural networks
© EDP Sciences, 2002
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