Symbiotic contact process: Phase transitions, hysteresis cycles, and bistability
| Autor: | André A. Moreira, T. B. dos Santos, J. S. Andrade, Nuno A. M. Araújo, Humberto A. Carmona, C. I. N. Sampaio Filho |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Random graph Phase transition Contact process Statistical Mechanics (cond-mat.stat-mech) Bistability Condensed matter physics Monte Carlo method FOS: Physical sciences 01 natural sciences Square lattice 010305 fluids & plasmas Hysteresis 0103 physical sciences 010306 general physics Critical dimension Condensed Matter - Statistical Mechanics |
| Zdroj: | Physical Review E. 98 |
| ISSN: | 2470-0053 2470-0045 |
| DOI: | 10.1103/physreve.98.062108 |
| Popis: | We performed Monte Carlo simulations of the symbiotic contact process on different spatial dimensions ($d$). On the complete and random graphs (infinite dimension), we observe hysteresis cycles and bistable regions, what is consistent with the discontinuous absorbing-state phase transition predicted by mean-field theory. By contrast, on a regular square lattice, we find no signs of bistability or hysteretic behavior. This result suggests that the transition in two dimensions is rather continuous. Based on our numerical observations, we conjecture that the nature of the transition changes at the upper critical dimension ($d_c$), from continuous ($dd_c$). Comment: 6 pages, 6 figures |
| Databáze: | OpenAIRE |
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