المؤلفون: Martin, Manuel Jimenez, Rodríguez-Laguna, Javier, D'Huys, Otti, de la Rubia, Javier, Korutcheva, Elka

المصدر: Phys. Rev. E 95, 052210 (2017)

مصطلحات موضوعية: Nonlinear Sciences - Chaotic Dynamics, Condensed Matter - Disordered Systems and Neural Networks, Condensed Matter - Statistical Mechanics

الوصف: We study the synchronization of chaotic units connected through time-delayed fluctuating interactions. We focus on small-world networks of Bernoulli and Logistic units with a fixed chiral backbone. Comparing the synchronization properties of static and fluctuating networks, we find that random network alternations can enhance the synchronizability. Synchronized states appear to be maximally stable when fluctuations are much faster than the time-delay, even when the instantaneous state of the network does not allow synchronization. This enhancing effect disappears for very slow fluctuations. For fluctuation time scales of the order of the time-delay, a desynchronizing resonance is reported. Moreover, we observe characteristic oscillations, with a periodicity related to the coupling delay, as the system approaches or drifts away from the synchronized state.
Comment: 12 pages, 10 figures, 2 appendices

الوصول الحر: http://arxiv.org/abs/1610.06507Test

المؤلفون: Fernandez, Miguel A., Korutcheva, Elka, de la Rubia, Javier

المصدر: Physica A 462 (2016) 603-618

مصطلحات موضوعية: Physics - Physics and Society, Condensed Matter - Statistical Mechanics, 82B44

الوصف: We study a diluted Blume-Capel model of 3-state sites as an attempt to understand how some social processes as cooperation or organization happen. For this aim we study the effect of the complex network topology on the equilibrium properties of the model, by focusing on three different substrates: random graph, Watts-Strogatz and Newman substrates.
Comment: 16 pages, 11 figures

الوصول الحر: http://arxiv.org/abs/1507.05111Test

المؤلفون: del Río, Ana Fernández, Korutcheva, Elka, de la Rubia, Javier

المصدر: Complexity, Wiley, 2012

مصطلحات موضوعية: Physics - Physics and Society, Condensed Matter - Statistical Mechanics, Computer Science - Social and Information Networks

الوصف: Coupled Ising models are studied in a discrete choice theory framework, where they can be understood to represent interdependent choice making processes for homogeneous populations under social influence. Two different coupling schemes are considered. The nonlocal or group interdependence model is used to study two interrelated groups making the same binary choice. The local or individual interdependence model represents a single group where agents make two binary choices which depend on each other. For both models, phase diagrams, and their implications in socioeconomic contexts, are described and compared in the absence of private deterministic utilities (zero opinion fields).
Comment: 17 pages, 3 figures. This is the pre-peer reviewed version of the following article: Ana Fern\'andez del R\'io, Elka Korutcheva and Javier de la Rubia, Interdependent binary choices under social influence, Wiley's Complexity, 2012; which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/cplx.21397/abstractTest

الوصول الحر: http://arxiv.org/abs/1204.2240Test