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Transient superdiffusion in correlated diffusive media

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 نشر من قبل Jacopo Bertolotti
 تاريخ النشر 2014
  مجال البحث فيزياء
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 تأليف Jacopo Bertolotti




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Diffusion processes are studied theoretically for the case where the diffusion coefficient is itself a time and position dependent random function. We investigate how inhomogeneities and fluctuations of the diffusion coefficient affect the transport using a perturbative approach, with a special attention to the time scaling of the second moment. We show that correlated disorder can lead to anomalous transport and superdiffusion.



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