Potts Model with q States on Directed Barab´asi-Albert Networks

作     者：F.W.S.Lima 

作者机构：Departamento de F´ısicaUniversidade Federal do Piau´ı57072-970 Teresina PIBrazil. 

出 版 物：《Communications in Computational Physics》 (计算物理通讯（英文）)

年 卷 期：2007年第2卷第3期

页      面：522-529页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：the Brazilian agency FAPEPI(Teresina-Piauı-Brasil)for its financial support also the Fernando Whitaker for the support of the system SGI Altix 1350 the computational park CENAPAD.UNICAMP-USP,SP-BRASIL 

主　　题：Monte Carlo simulation Ising networks disorder. 

摘      要：On directed Barab´asi-Albert networks with two and seven neighbours selected by each added site,the Ising model with spin S=1/2 was seen not to show a spontaneous ***,the decay time for flipping of the magnetisation followed an Arrhenius law for Metropolis and Glauber algorithms,but for Wolff cluster flipping the magnetisation decayed exponentially with ***,on these networks the Ising model spin S=1 was seen to show a spontaneous *** this case,a first-order phase transition for values of connectivity z=2 and z=7 is well *** these same networks the Potts model with q=3 and 8 states is now studied through Monte Carlo *** also obtained for q=3 and 8 states a first-order phase transition for values of connectivity z=2 and z=7 for the directed Barab´asi-Albert *** results are different from the results obtained for the same model on two-dimensional lattices,where for q=3 the phase transition is of second order,while for q=8 the phase transition is of first-order.