Abstract
We study the collective behavior of an Ising system on a small-world network with the interaction where r represents the Euclidean distance between two nodes. In the case of corresponding to the uniform interaction, the system is known to possess a phase transition of the mean-field nature, while the system with the short-range interaction does not exhibit long-range order at any finite temperature. The Monte Carlo simulations are performed at various values of and the critical value beyond which the long-range order does not emerge is estimated to be 0. Thus, concluded is the absence of a phase transition in the system with the algebraically decaying interaction for any nonzero positive value of
- Received 10 March 2003
DOI:https://doi.org/10.1103/PhysRevE.68.027101
©2003 American Physical Society