Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2003-11-12
Eur. Phys. J. B 36, 545-553 (2003)
Physics
Condensed Matter
Statistical Mechanics
18 pages, 1 figure. Accepted for publication in "The European Physical Journal B (EPJB)"
Scientific paper
10.1140/epjb/e2004-00010-8
In this article, we investigate the competing Glauber-type and Kawasaki-type dynamics with small-world network (SWN) effect, in the framework of the Gaussian model. The Glauber-type single-spin transition mechanism with probability p simulates the contact of the system with a heat bath and the Kawasaki-type dynamics with probability 1-p simulates an external energy flux. Two different types of SWN effect are studied, one with the total number of links increased and the other with it conserved. The competition of the dynamics leads to an interesting self-organization process that can be characterized by a phase diagram with two identifiable temperatures. By studying the modification of the phase diagrams, the SWN effect on the two dynamics is analyzed. For the Glauber-type dynamics, more important is the altered average coordination number while the Kawasaki-type dynamics is enhanced by the long range spin interaction and redistribution.
Liu Wei
Zhu Han
Zhu Jian-Yang
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