{ "id": "cond-mat/0302538", "version": "v2", "published": "2003-02-26T10:44:57.000Z", "updated": "2003-04-10T10:30:46.000Z", "title": "On the Parisi-Toulouse hypothesis for the spin glass phase in mean-field theory", "authors": [ "A. Crisanti", "T. Rizzo", "T. Temesvari" ], "comment": "6 pages, 2 figures", "journal": "Eur. Phys. J. B 33, 203-207 (2003)", "doi": "10.1140/epjb/e2003-00157-8", "categories": [ "cond-mat.dis-nn", "cond-mat.stat-mech" ], "abstract": "We consider the spin-glass phase of the Sherrington-Kirkpatrick model in the presence of a magnetic field. The series expansion of the Parisi function $q(x)$ is computed at high orders in powers of $\\tau=T_c-T$ and $H$. We find that none of the Parisi-Toulouse scaling hypotheses on the $q(x)$ behavior strictly holds, although some of them are violated only at high orders. The series is resummed yielding results in the whole spin-glass phase which are compared with those from a numerical evaluation of the $q(x)$. At the high order considered, the transition turns out to be third order on the Almeida-Thouless line, a result which is confirmed rigorously computing the expansion of the solution near the line at finite $\\tau$. The transition becomes smoother for infinitesimally small field while it is third order at strictly zero field.", "revisions": [ { "version": "v2", "updated": "2003-04-10T10:30:46.000Z" } ], "analyses": { "keywords": [ "spin glass phase", "mean-field theory", "parisi-toulouse hypothesis", "high order", "spin-glass phase" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 6, "language": "en", "license": "arXiv", "status": "editable" } } }