Absence of ferromagnetism in Ising model on directed Barabasi-Albert network

Details Absence of ferromagnetism in Ising model on directed Barabasi-Albert network Absence of ferromagnetism in Ising model on directed Barabasi-Albert network

2005-04-18

arxiv.org/abs/cond-mat/0504460v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

Islamic University Conference, Gaza, March 2005; for the university Magazine

Scientific paper

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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