Fluctuation of the Top Location and Avalanches in the Formation Process of a Sandpile - Condensed Matter > Soft Condensed MatterReportar como inadecuado




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Abstract: We investigate the formation processes of a sandpile using numericalsimulation. We find a new relation between the fluctuation of the motion of thetop and the surface state of a sandpile. The top moves frequently as particlesare fed one by one every time interval T. The time series of the top locationhas the power spectrum which obeys a power law, Sf~f^{\alpha}, and itsexponent \alpha depends on T and the system size w. The surface state ischaracterized by two time scales; the lifetime of an avalanche, T {a}, and thetime required to cause an avalanche, T {s}. The surface state is fluid-likewhen T {a}~T {s}, and it is solid-like when T {a}<


Autor: Chiyori Urabe

Fuente: https://arxiv.org/



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