{ "id": "2001.06856", "version": "v1", "published": "2020-01-19T16:14:30.000Z", "updated": "2020-01-19T16:14:30.000Z", "title": "Anomalous relaxation in dielectrics with Hilfer fractional derivative", "authors": [ "A. R. Gomez Plata", "Ester C. A. F. Rosa", "R. G Rodriguez-Giraldo", "E. Capelas de Oliveira" ], "comment": "20 pages", "categories": [ "cond-mat.stat-mech", "math-ph", "math.MP" ], "abstract": "We introduce a new relaxation function depending on an arbitrary parameter as solution of a kinetic equation in the same way as the relaxation function introduced empirically by Debye, Cole-Cole, Davidson-Cole and Havriliak-Negami, anomalous relaxation in dielectrics, which are recovered as particular cases. We propose a differential equation introducing a fractional operator written in terms of the Hilfer fractional derivative of order {\\xi}, with 0<{\\xi}<1 and type {\\eta}, with 0<{\\eta}<1. To discuss the solution of the fractional differential equation, the methodology of Laplace transform is required. As a by product we mention particular cases where the solution is completely monotone. Finally, the empirical models are recovered as particular cases.", "revisions": [ { "version": "v1", "updated": "2020-01-19T16:14:30.000Z" } ], "analyses": { "keywords": [ "hilfer fractional derivative", "anomalous relaxation", "dielectrics", "relaxation function", "fractional differential equation" ], "note": { "typesetting": "TeX", "pages": 20, "language": "en", "license": "arXiv", "status": "editable" } } }