Volume 122, Number 5, June 2018
|Number of page(s)||5|
|Published online||17 July 2018|
Correlations and hyperuniformity in the avalanche size of the Oslo model
1 Department of Mathematics, Imperial College London - London SW7 2AZ, UK
2 Centre for Complexity Science, Imperial College London - London SW7 2AZ, UK
3 Department of Physics, Blackett Laboratory, Imperial College London - London SW7 2AZ, UK
Received: 13 April 2018
Accepted: 19 June 2018
Certain random processes display anticorrelations resulting in local Poisson-like disorder and global order, where correlations suppress fluctuations. Such processes are called hyperuniform. Using a map to an interface picture we show via analytic calculations that a sequence of avalanche sizes of the Oslo model is hyperuniform in the temporal domain with the minimal exponent . We identify the conserved quantity in the interface picture that gives rise to the hyperuniformity in the avalanche size. We further discuss the fluctuations of the avalanche size in two variants of the Oslo model. We support our findings with numerical results.
PACS: 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 05.65.+b – Self-organized systems / 05.70.Jk – Critical point phenomena
© EPLA, 2018
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