{ "id": "1606.04844", "version": "v1", "published": "2016-06-11T00:43:47.000Z", "updated": "2016-06-11T00:43:47.000Z", "title": "Fractional derivative with non-singular kernels in anomalous relaxation and diffusion modeling", "authors": [ "HongGuang Sun", "Xiaoxiao Hao", "Yong Zhang", "Dumitru Baleanu" ], "comment": "16 pages, 5 figures", "categories": [ "cond-mat.stat-mech" ], "abstract": "Anomalous relaxation and diffusion processes are major application area of fractional derivative models. This paper offers an investigation on physical behavior of fractional derivative relaxation and diffusion models by using a new definition of fractional derivative with exponential kernel. Our analytical results indicate that the fractional derivative models with new definition cannot well characterize non-exponential nature of anomalous relaxation and diffusion processes. Hereby, this paper introduces a legitimate extension of fractional derivative by replacing exponential kernel with a stretched exponential kernel. Numerical results illustrate the fractional derivative model with stretched exponential kernel can describe wide range of anomalous physical phenomena, compared with the exponential kernel.", "revisions": [ { "version": "v1", "updated": "2016-06-11T00:43:47.000Z" } ], "analyses": { "keywords": [ "anomalous relaxation", "fractional derivative model", "non-singular kernels", "diffusion modeling", "stretched exponential kernel" ], "note": { "typesetting": "TeX", "pages": 16, "language": "en", "license": "arXiv", "status": "editable" } } }