{ "id": "cond-mat/0607565", "version": "v2", "published": "2006-07-23T14:10:40.000Z", "updated": "2006-12-21T19:15:04.000Z", "title": "Influence of the Ground-State Topology on the Domain-Wall Energy in the Edwards-Anderson +/- J Spin Glass Model", "authors": [ "F. Roma", "S. Risau-Gusman", "A. J. Ramirez-Pastor", "F. Nieto", "E. E. Vogel" ], "comment": "4 pages, 3 figures. Accepted for publication in Rapid Communications of Phys. Rev. B", "categories": [ "cond-mat.dis-nn", "cond-mat.stat-mech" ], "abstract": "We study the phase stability of the Edwards-Anderson spin-glass model by analyzing the domain-wall energy. For the bimodal distribution of bonds, a topological analysis of the ground state allows us to separate the system into two regions: the backbone and its environment. We find that the distributions of domain-wall energies are very different in these two regions for the three dimensional (3D) case. Although the backbone turns out to have a very high phase stability, the combined effect of these excitations and correlations produces the low global stability displayed by the system as a whole. On the other hand, in two dimensions (2D) we find that the surface of the excitations avoids the backbone. Our results confirm that a narrow connection exists between the phase stability of the system and the internal structure of the ground-state. In addition, for both 3D and 2D we are able to obtain the fractal dimension of the domain wall by direct means.", "revisions": [ { "version": "v2", "updated": "2006-12-21T19:15:04.000Z" } ], "analyses": { "keywords": [ "spin glass model", "domain-wall energy", "ground-state topology", "low global stability", "edwards-anderson spin-glass model" ], "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable" } } }