Abstract
We calculate a correlation function of a dipole which flips upon contact with one of the defects making generally non-Gaussian diffusions. Other than the memory effect in the fractal random walk model, the non-Gaussian property can be an origin of the stretched-exponential law of the correlation function.
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Ito, H.M., Ogura, Y. & Tomisaki, M. Stretched-exponential decay laws of general defect diffusion models. J Stat Phys 66, 563–582 (1992). https://doi.org/10.1007/BF01060081
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DOI: https://doi.org/10.1007/BF01060081