Regensburg 2007 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 30: Poster II
DY 30.16: Poster
Thursday, March 29, 2007, 16:00–18:00, Poster D
Ising model on hierarchical scale-free networks — •Sebastian Komosa and Janusz Hołyst — Faculty of Physics and Center of Excellence for Complex Systems Research, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
We studied behavior of a Ising spin model on different hierarchical scale-free networks using Monte Carlo simulations. We observed a phase transition from ferromagnetism to paramagnetism and a power-law behavior of critical temperature with network size. Two different order parameters were used: a standard average network spin and a weighted average network spin. The critical temperature is a power-law function of the ratio ⟨ k2 ⟩ / ⟨ k ⟩.