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- W3015082445 abstract "We consider random walkers that deform the medium as they move, enabling a faster motion in regions which have been recently visited. This induces an effective attraction between walkers mediated by the medium, which can be regarded as a space metric, giving rise to a statistical mechanics toy model either for gravity, motion through deformable matter or adaptable geometry. In the strong-deformability regime, we find that diffusion is initially described by the porous medium equation, thus yielding subdiffusive behavior of an initially localized cloud of particles. Indeed, while the average width of a single cloud will sustain a $sigmasim t^{1/2}$ growth, the combined width of the whole ensemble will grow like $sigmasim t^{1/3}$ in a certain time regime. This difference can be accounted for by the strong correlations between the particles, which we explore indirectly through the fluctuations of the center of mass of the cloud and the expected value of the experienced density, defined as the average density measured by the particles themselves." @default.
- W3015082445 created "2020-04-10" @default.
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- W3015082445 date "2021-07-01" @default.
- W3015082445 modified "2023-10-17" @default.
- W3015082445 title "Random walkers on a deformable medium" @default.
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- W3015082445 doi "https://doi.org/10.1088/1742-5468/ac1261" @default.
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