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Fluctuations and correlations in sandpiles and interfaces with boundary pinning

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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en

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Physical Review E, Volume 69, issue 1, pp. 1-5

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Interfaces are studied in an inhomogeneous critical state where boundary pinning is compensated with a ramped force. Sandpiles driven off the self-organized critical point provide an example of this ensemble in the Edwards-Wilkinson (EW) model of kinetic roughening. A crossover from quenched to thermal noise violates spatial and temporal translational invariances. The bulk temporal correlation functions have the effective exponents β1D∼0.88±0.03 and β2D∼0.52±0.05, while at the boundaries βb,1D/2D∼0.47±0.05. The bulk β1D is shown to be reproduced in a randomly kicked thermal EW model.

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Alava, M & Chattopadhyay, A K 2004, 'Fluctuations and correlations in sandpiles and interfaces with boundary pinning', Physical Review E, vol. 69, no. 1, 016104, pp. 1-5. https://doi.org/10.1103/PhysRevE.69.016104

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