{ "id": "1505.03166", "version": "v1", "published": "2015-05-01T18:30:15.000Z", "updated": "2015-05-01T18:30:15.000Z", "title": "Multifractality and quantum diffusion from self-consistent theory of localization", "authors": [ "I. M. Suslov" ], "comment": "Latex, 19 pages, 7 figures included", "categories": [ "cond-mat.dis-nn" ], "abstract": "Multifractal properties of wave functions in a disordered system can be derived from self-consistent theory of localization by Vollhardt and Woelfle. A diagrammatic interpretation of results allows to obtain all scaling relations used in numerical experiments. The arguments are given that the one-loop Wegner result for a space dimension d=2+\\epsilon may appear to be exact, so the multifractal spectrum is strictly parabolical. The \\sigma-models are shown to be deficient at the four-loop level and the possible reasons of that are discussed. The extremely slow convergence to the thermodynamic limit is demonstrated. The open question on the relation between multifractality and a spatial dispersion of the diffusion coefficient D(\\omega,q) is resolved in the compromise manner due to ambiguity of the D(\\omega,q) definition. Comparison is made with the extensive numerical material.", "revisions": [ { "version": "v1", "updated": "2015-05-01T18:30:15.000Z" } ], "analyses": { "keywords": [ "self-consistent theory", "quantum diffusion", "multifractality", "localization", "one-loop wegner result" ], "publication": { "doi": "10.1134/S1063776115110096", "journal": "Soviet Journal of Experimental and Theoretical Physics", "year": 2015, "month": "Nov", "volume": 121, "number": 5, "pages": 885 }, "note": { "typesetting": "LaTeX", "pages": 19, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015JETP..121..885S" } } }