Cyclic competition of four species: domains and interfaces
نویسندگان
چکیده
We study numerically domain growth and interface fluctuations in oneand two-dimensional lattice systems composed of four species that interact in a cyclic way. Particle mobility is implemented through exchanges of particles located on neighboring lattice sites. For the chain we find that the details of the domain growth strongly depend on the mobility, with a higher mobility yielding a larger effective domain growth exponent. In two space dimensions, when also exchanges between mutually neutral particles are possible, both domain growth and interface fluctuations display universal regimes that are independent of the predation and exchange rates. PACS numbers: 02.50.Ey,05.40.-a,87.23.Cc,87.10.Mn Cyclic competition of four species: domains and interfaces 2
منابع مشابه
Extinction in four species cyclic competition
When four species compete stochastically in a cyclic way, the formation of two teams of mutually neutral partners is observed. In this paper we study through numerical simulations the extinction processes that can take place in this system both in the well mixed case as well as on different types of lattices. The different routes to extinction are revealed by the probability distribution of the...
متن کاملStochastic evolution of four species in cyclic competition
We study the stochastic evolution of four species in cyclic competition in a well mixed environment. In systems composed of a finite number N of particles these simple interaction rules result in a rich variety of extinction scenarios, from single species domination to coexistence between non-interacting species. Using exact results and numerical simulations we discuss the temporal evolution of...
متن کاملInterfaces with internal structures in generalized rock-paper-scissors models.
In this work we investigate the development of stable dynamical structures along interfaces separating domains belonging to enemy partnerships in the context of cyclic predator-prey models with an even number of species N≥8. We use both stochastic and field theory simulations in one and two spatial dimensions, as well as analytical arguments, to describe the association at the interfaces of mut...
متن کاملSegregation in a One-Dimensional Model of Interacting Species.
We investigate segregation and spatial organization in a one-dimensional system of N competing species forming a cyclic food chain. For N , 5, the system organizes into single-species domains, with an algebraically growing average size. For N 3 and N 4, the domains are correlated and they organize into “superdomains” which are characterized by an additional length scale. We present scaling ...
متن کاملEEG Based Brain Computer Interface Hand Grasp Control: Feature Extraction Method MTCSP
Brain-Computer Interfaces (BCIs) are communication systems, which enable users to send commands to computers by using brain activity only; this activity being generally measured by Electroencephalography (EEG). BCIs are generally designed according to a pattern recognition approach, i.e., by extracting features from EEG signals, and by using a classifier to identify the user’s mental state from...
متن کامل