Numéro |
J. Physique Lett.
Volume 45, Numéro 22, novembre 1984
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Page(s) | 1063 - 1069 | |
DOI | https://doi.org/10.1051/jphyslet:0198400450220106300 |
J. Physique Lett. 45, 1063-1069 (1984)
DOI: 10.1051/jphyslet:0198400450220106300
1 INFN Sezione di Roma, Italy
2 Dipartimento di Fisica, Università Di Roma « Tor Vergata » and Laboratorio Nazionale INFN de Frascati, Italy
3 Dipartimento di Fisica, Università di Roma I « La Sapienza » and INFN, Sezione di Roma, Italy
7540 - Critical point effects, specific heats, short range order in magnetic materials.
Key words
spin glasses -- overlap distribution -- pure states -- spin glass phase -- zero temperature mean field equations -- Sherrington Kirkpatrick model -- fluctuations -- order parameter -- ultrametricity structure
DOI: 10.1051/jphyslet:0198400450220106300
A numerical investigation of the overlap distribution among pure states in the spin glass phase
N. Parga1, G. Parisi2 et M.A. Virasoro31 INFN Sezione di Roma, Italy
2 Dipartimento di Fisica, Università Di Roma « Tor Vergata » and Laboratorio Nazionale INFN de Frascati, Italy
3 Dipartimento di Fisica, Università di Roma I « La Sapienza » and INFN, Sezione di Roma, Italy
Abstract
We use zero temperature mean field equations to study numerically several properties of the Sherrington-Kirkpatrick model. In particular we observe the fluctuations from sample to sample of the order parameter q( x) and see partial evidence of the ultrametricity structure among pure states.
Résumé
A partir des équations de champ moyen à température nulle on étudie numériquement les propriétés du modèle de Sherrington-Kirkpatrick. En particulier on observe les fluctuations du paramètre d'ordre q(x) quand on change de couplages Jij et on voit partiellement la structure ultramétrique parmi les états purs.
7540 - Critical point effects, specific heats, short range order in magnetic materials.
Key words
spin glasses -- overlap distribution -- pure states -- spin glass phase -- zero temperature mean field equations -- Sherrington Kirkpatrick model -- fluctuations -- order parameter -- ultrametricity structure