Absence of ferromagnetism in Ising model on directed Barabasi-Albert network
Sumour, Muneer A. · Shabat, M. M. · Stauffer, D.
Original · EN
With up to 7 million spins, the existence of spontaneous magnetization of Ising spins on directed Barabasi-Albert networks is investigated by Monte Carlo simulations. We confirm our earlier result that the magnetization for different temperatures T decays after a characteristic time tau(T), which we extrapolate to diverge at zero temperature by a modified Arrhenius law,or perhaps a power law.
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