Conserved Manna model on Barabasi–Albert scale-free network

Himangsu Bhaumik ()
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Himangsu Bhaumik: Indian Institute of Technology Guwahati

The European Physical Journal B: Condensed Matter and Complex Systems, 2018, vol. 91, issue 1, 1-6

Abstract: Abstract In this paper, a conserved Manna model is constructed and studied on Barabasi–Albert scale-free network with degree exponent γ = 3. Numerically I show that the system undergoes an absorbing state phase transition when the particle density is varied. Such a phase transition is characterized by measuring several critical exponents associated with the critical behaviour of the model. It has been found that the critical exponents exhibit mean field values of directed percolation. At the critical point, the spreading exponents have also been estimated. They satisfy the usual scaling relations. The effect of various initial conditions has been investigated and the result found to be independent of initial conditions, contrary to the fact that critical behaviour of such model highly depends on initial conditions when studied on regular lattice. The study confirms that though the Manna model in the lower dimensions exhibits different critical behavior other than DP, in the scale-free network it exhibits similar mean field result of DP class.

Date: 2018
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DOI: 10.1140/epjb/e2017-80602-9

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