期刊
PHYSICS LETTERS A
卷 303, 期 2-3, 页码 166-168出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0375-9601(02)01232-X
关键词
networks; Curie temperature; mean field approximation; critical phenomena
The mean field solution of the Ising model on a Barabasi-Albert scale-free network with ferromagnetic coupling between linked spins is presented. The critical temperature T-c for the ferromagnetic to paramagnetic phase transition (Curie temperature) is infinite and the effective critical temperature for a finite size system increases as the logarithm of the system size in agreement with recent numerical results of Aleksiejuk, Holyst and Stauffer. (C) 2002 Elsevier Science B.V. All rights reserved.
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