Generalized Langevin equation with fluctuating diffusivity
نویسندگان
چکیده
A generalized Langevin equation with fluctuating diffusivity (GLEFD) is proposed, and it shown that the GLEFD satisfies a fluctuation-dissipation relation. If memory kernel power law, exhibits subdiffusion, non-Gaussianity, stretched-exponential relaxation. The case in which given by single exponential function also investigated as an analytically tractable example. In particular, mean-square displacement self-intermediate-scattering of this system show plateau structures. numerical scheme to integrate presented.
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ژورنال
عنوان ژورنال: Physical review research
سال: 2022
ISSN: ['2643-1564']
DOI: https://doi.org/10.1103/physrevresearch.4.043062