arXiv subjects

Muneer A. Sumour

Publications and source records attributed to Muneer A. Sumour.

3 recordsLinked to original sources

arXiv2016

Unusual ferromagnetism in Ising and Potts model on semi-directed Barabási-Albert networks

We check the existence of a spontaneous magnetisation of Ising and Potts spins on semi-directed Barabasi-Albert networks by Monte Carlo simulations. We verified that the magnetisation for different temperatures $T$ decays after a characteristic time $τ(T)$, which we extrapolate to diverge at positive temperatures $T_c(N)$ by a Vogel-Fulcher law, with $T_c(N)$ increasing logarithmically with network size $N$.

cond-mat.dis-nn↗

arXiv2005

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

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.

cond-mat.dis-nn↗

arXiv2004

Monte Carlo simulation of Ising model on directed Barabasi-Albert network

The existence of spontaneous magnetization of Ising spins on directed Barabasi-Albert networks is investigated with seven neighbors, by using Monte Carlo simulations. In large systems we see the magnetization for different temperatures T to decay after a characteristic time tau, which is extrapolated to diverge at zero temperature.

cond-mat.dis-nn↗