Competition Among Reputations in the 2D Sznajd Model: Spontaneous Emergence of Democratic States
Fuente:
Redalyc
Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Published: |
Sociedade Brasileira de Física
2012
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1876476378254147584 |
|---|---|
| author | Nuno Crokidakis |
| author_facet | Nuno Crokidakis |
| contents | Competition Among Reputations in the 2D Sznajd Model: Spontaneous Emergence of Democratic States Nuno Crokidakis Fabricio L. Forgerini Física, Astronomía y Matemáticas Phase transitions Cellular automata Dynamics of social systems We propose a modification in the Sznajd sociophysics model defined on the square lattice. For this purpose, we consider reputation-a mechanism limiting the agents' persuasive power. The reputation is introduced as a time-dependent score, which can be positive or negative. This mechanism avoids dictatorship (full consensus, all spins parallel) for a wide range of model parameters. We consider two different situations: case 1, in which the agents' reputation increases for each persuaded neighbor, and case 2, in which the agents¿ reputation increases for each persuasion and decreases when a neighbor keeps his opinion. Our results show that the introduction of reputation avoids full consensus even for initial densities of up spins greater than 1/2. The relaxation times follow a log-normal-like distribution in both cases, but they are larger in case 2 due to the competition among reputations. In addition, we show that the usual phase transition occurs and depends on the initial concentration d of individuals with the same opinion, but the critical points dc in the two cases are different. 2012 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46423428016 http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1-2 Vol.42 |
| format | Artículo científico |
| id | redalyc_46423428016 |
| institution | Redalyc |
| language | |
| publishDate | 2012 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Competition Among Reputations in the 2D Sznajd Model: Spontaneous Emergence of Democratic States Nuno Crokidakis Física, Astronomía y Matemáticas Phase transitions Cellular automata Dynamics of social systems Competition Among Reputations in the 2D Sznajd Model: Spontaneous Emergence of Democratic States Nuno Crokidakis Fabricio L. Forgerini Física, Astronomía y Matemáticas Phase transitions Cellular automata Dynamics of social systems We propose a modification in the Sznajd sociophysics model defined on the square lattice. For this purpose, we consider reputation-a mechanism limiting the agents' persuasive power. The reputation is introduced as a time-dependent score, which can be positive or negative. This mechanism avoids dictatorship (full consensus, all spins parallel) for a wide range of model parameters. We consider two different situations: case 1, in which the agents' reputation increases for each persuaded neighbor, and case 2, in which the agents¿ reputation increases for each persuasion and decreases when a neighbor keeps his opinion. Our results show that the introduction of reputation avoids full consensus even for initial densities of up spins greater than 1/2. The relaxation times follow a log-normal-like distribution in both cases, but they are larger in case 2 due to the competition among reputations. In addition, we show that the usual phase transition occurs and depends on the initial concentration d of individuals with the same opinion, but the critical points dc in the two cases are different. 2012 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46423428016 http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1-2 Vol.42 |
| title | Competition Among Reputations in the 2D Sznajd Model: Spontaneous Emergence of Democratic States |
| topic | Física, Astronomía y Matemáticas Phase transitions Cellular automata Dynamics of social systems |
| url | https://www.redalyc.org/articulo.oa?id=46423428016 |