Non-Gaussian Distributions to Random Walk in the Context of Memory Kernels

被引:33
|
作者
dos Santos, Maike A. E. [1 ]
机构
[1] Univ Fed Rio Grande do Sul, Inst Fis, Caixa Postal 15051, BR-91501970 Porto Alegre, RS, Brazil
关键词
fractional diffusion equation; memory kernels; random walk; diffusion models; solution techniques; anomalous diffusion; ANOMALOUS DIFFUSION-MODELS; BROWNIAN-MOTION; KINETIC-THEORY; TRANSPORT; EQUATIONS;
D O I
10.3390/fractalfract2030020
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
The investigation of diffusive process in nature presents a complexity associated with memory effects. Thereby, it is necessary new mathematical models to involve memory concept in diffusion. In the following, I approach the continuous time random walks in the context of generalised diffusion equations. To do this, I investigate the diffusion equation with exponential and Mittag-Leffler memory-kernels in the context of Caputo-Fabrizio and Atangana-Baleanu fractional operators on Caputo sense. Thus, exact expressions for the probability distributions are obtained, in that non-Gaussian distributions emerge. I connect the distribution obtained with a rich class of diffusive behaviour. Moreover, I propose a generalised model to describe the random walk process with resetting on memory kernel context.
引用
收藏
页码:1 / 15
页数:15
相关论文
共 50 条
  • [31] Stochastic Energetics for Non-Gaussian Processes
    Kanazawa, Kiyoshi
    Sagawa, Takahiro
    Hayakawa, Hisao
    PHYSICAL REVIEW LETTERS, 2012, 108 (21)
  • [32] Non-Gaussian, non-dynamical stochastic resonance
    Szczepaniec, Krzysztof
    Dybiec, Bartlomiej
    EUROPEAN PHYSICAL JOURNAL B, 2013, 86 (11)
  • [33] Discrete Step Sizes of Molecular Motors Lead to Bimodal Non-Gaussian Velocity Distributions under Force
    Vu, Huong T.
    Chakrabarti, Shaon
    Hinczewski, Michael
    Thirumalai, D.
    PHYSICAL REVIEW LETTERS, 2016, 117 (07)
  • [34] Fractional diffusion: probability distributions and random walk models
    Gorenflo, R
    Mainardi, F
    Moretti, D
    Pagnini, G
    Paradisi, P
    PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 2002, 305 (1-2) : 106 - 112
  • [35] On the model of random walk with multiple memory structure
    Arkashov, N. S.
    PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 2022, 603
  • [36] A model of non-Gaussian diffusion in heterogeneous media
    Lanoiselee, Yann
    Grebenkov, Denis S.
    JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2018, 51 (14)
  • [37] Non-Gaussian information of heterogeneity in soft matter
    Dandekar, Rahul
    Bose, Soumyakanti
    Dutta, Suman
    EPL, 2020, 131 (01)
  • [38] Non-Gaussian diffusion in static disordered media
    Luo, Liang
    Yi, Ming
    PHYSICAL REVIEW E, 2018, 97 (04)
  • [39] A class of weakly stationary non-Gaussian models
    Grigoriu, M.
    PROBABILISTIC ENGINEERING MECHANICS, 2008, 23 (04) : 378 - 384
  • [40] Statistical Assessment of Non-Gaussian Diffusion Models
    Kristoffersen, Anders
    MAGNETIC RESONANCE IN MEDICINE, 2011, 66 (06) : 1639 - 1648