Article
Mathematics, Interdisciplinary Applications
M. A. Ferre
Summary: Chimera states refer to a spatiotemporal phenomenon where coherence and incoherence dynamics coexist in homogeneous systems. Originally observed in non-locally coupled phase oscillators, this phenomenon has been observed in various systems including chaotic maps, time-delay systems, and complex networks. This review summarizes the different systems where chimera states are observed, focusing on theoretical and experimental contributions. It also critically examines the definitions of chimera states and presents some related works. Furthermore, new research perspectives are suggested due to the stage of the field.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Business
Jason Brennan
Summary: The paper discusses the responsibility of businesses to promote diversity and points out the tension between diversity and corporate profits. Diversity is both a matter of justice and related to performance improvement, but there is a philosophical conflict between these two perspectives.
JOURNAL OF BUSINESS ETHICS
(2023)
Article
Multidisciplinary Sciences
Raphael Sarfati, Laura Gaudette, Joseph M. Cicero, Orit Peleg
Summary: Flash synchrony within firefly swarms is an elegant but elusive manifestation of collective animal behaviour. This study used statistical methods to analyze high-resolution videos, confirming the occurrence of synchrony in Photinus knulli fireflies and finding similarities with the flashing patterns of Photinus carolinus fireflies in the Eastern USA.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2022)
Article
Physics, Applied
Jie Wu, Mingqi Liu, Ru-ru Ma, Xiaofeng Wang
Summary: This investigation focuses on phase agreement (PA) for identical Kuramoto oscillators and frequency synchronization (FS) for nonidentical oscillators within a fixed-time in noisy environments. By using a smooth control protocol, the synchronizing performance of networked systems can be improved. The study considers the noise factor and derives synchronization criteria for achieving the phase-FS within a fixed-time in probability, with a time estimation of synchronization. Simulation results validate the theoretical analysis, showing that PA is more robust to stochastic disturbance while FS of oscillators is relatively sensitive.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Review
Psychology, Multidisciplinary
Arodi Farrera, Gabriel Ramos-Fernandez
Summary: This article reviews the literature on social interactions, discussing the existence of rhythmic patterns and coordination at the group level. The authors argue that the complexity of group dynamics can lead to emergent collective rhythms that cannot be predicted from individual periodicities. They also suggest that considering the sociocultural context in which individuals develop can help explain the seemingly divergent results on the social influences and consequences of interpersonal coordination.
FRONTIERS IN PSYCHOLOGY
(2022)
Review
Biology
Robin Schimmelpfennig, Layla Razek, Eric Schnell, Michael Muthukrishna
Summary: Human societies function as collective brains, where cultural brains seek adaptive knowledge and transmit solutions. Innovations emerge through transmission of mistakes, improvements, and recombination. The rate of innovation depends on society's size, interconnectedness, fidelity of information transmission, and cultural trait diversity. Diversity empowers innovation but also poses coordination and communication challenges.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Mathematics, Applied
Luis Guillermo Venegas-Pineda, Hildeberto Jardon-Kojakhmetov, Ming Cao
Summary: In this study, a multilayer network composed of heterogeneous phase oscillators is analyzed using mean-field techniques and geometric singular perturbation theory. The necessary and sufficient condition for producing stable chimera states is derived, and arguments for the presence of such patterns in the associated network under specific conditions are given.
Article
Physics, Multidisciplinary
Bing-Quan Zhang, Zhi-Gang Shao
Summary: The collective motion of self-propelled particles in complex noise environments was studied through simulations based on the Vicsek model. The impact of the proportion of noise region p on the system's collective motion was found to be significant, leading to a transition at the critical P-c.Increased noise amplitude resulted in a decrease in the critical value p(c) and changes in the synchronization behavior of the particles.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2021)
Article
Mathematics, Applied
Debora Amadori, Matteo Colangeli, Astrid Correa, Lamberto Rondoni
Summary: The dynamics of Kuramoto oscillators were investigated using the exact response theory based on the Dissipation Function. The Kuramoto dynamics undergoing synchronization transitions was analyzed and compared with the linear response theory, showing the failure of the latter and the success of the exact theory in handling systems undergoing phase transitions.
PHYSICA D-NONLINEAR PHENOMENA
(2022)
Article
Multidisciplinary Sciences
Martin Saveski, Edmond Awad, Iyad Rahwan, Manuel Cebrian
Summary: This study explores the characteristics of successful groups in an escape room game and examines the ability of humans and machines to identify successful groups from photos. Larger, older, and more gender-diverse groups are found to be more likely to succeed. Machines outperform humans in predicting group success based on visual cues, showing the potentials and limitations of machine learning systems in this context.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Mikhail Tokman, Maria Erukhimova, Yongrui Wang, Alexey Belyanin
Summary: Many-body Coulomb interactions in highly doped semiconductor quantum wells lead to a merger of all intersubband transition resonances into one sharp peak at a higher frequency. This effect is due to Coulomb-induced synchronization of coherences of all N transitions and a collective increase in their coupling with an external optical field. In the high-doping limit, the light-matter interaction dynamics are described by an analytic theory of N coupled oscillators, determining the new collective normal modes and predicting the frequency and strength of the blueshifted collective resonance.
Article
Mathematics, Interdisciplinary Applications
Julio D. da Fonseca, Edson D. Leonel, Rene O. Medrano-T
Summary: We derive a formula for the statistical distribution of instantaneous frequencies in the Kuramoto-Sakaguchi model. This is based on the Kuramoto-Sakaguchi's theory of globally coupled phase oscillators, where we provide a detailed review of its assumptions and the derivation process of its main results. Our formula, a stationary probability density function with a complex mathematical structure, aligns well with numerical simulations and provides insight into the stationary collective states of the Kuramoto-Sakaguchi model.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Physics, Mathematical
Georgi S. Medvedev, Mathew S. Mizuhara
Summary: This study analyzes the Kuramoto model of coupled phase oscillators with inertia on Erdos-Renyi graphs, identifying various two cluster patterns and studying their stability. The cluster dynamics are decomposed into two systems governing the macro dynamics of cluster centers of mass and the micro dynamics of individual oscillators in each cluster. Stability of the cluster dynamics depends on the stability of low-dimensional group motion and coherence of oscillators within each group.
JOURNAL OF STATISTICAL PHYSICS
(2021)
Article
Multidisciplinary Sciences
Payam Aminpour, Steven A. Gray, Alison Singer, Steven B. Scyphers, Antonie J. Jetter, Rebecca Jordan, Robert Murphy, Jonathan H. Grabowski
Summary: Studies suggest that diverse groups are more advantageous in solving complex problems, and integrating various local expertise can enhance the understanding of complex social-ecological issues. Research on striped bass fisheries in Massachusetts showed that diverse models outperform homogeneous models in capturing complex feedbacks and interdependencies. Proper aggregation processes can lead to more complex yet parsimonious models.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Neurosciences
Enhui Xie, Keshuang Li, Ruolei Gu, Dandan Zhang, Xianchun Li
Summary: This study investigated the impact of information exchange on collective performance using behavioral and neuroimaging approaches. The findings showed that verbal information exchange significantly enhanced collective performance, with group discussion playing a more essential role. Group identification mediated the positive effect of verbal information exchange on collective performance.
Article
Physics, Multidisciplinary
Diego Pazo, Ernest Montbrio, Rafael Gallego
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2019)
Article
Mathematics, Applied
Diego Pazo, Rafael Gallego
Article
Multidisciplinary Sciences
Catharina E. Graafland, Jose M. Gutierrez, Juan M. Lopez, Diego Pazo, Miguel A. Rodriguez
SCIENTIFIC REPORTS
(2020)
Editorial Material
Mathematics, Applied
Diego Pazo, Rafael Gallego
Summary: In this study, an extension of the Winfree model with nonlinear interactions was analyzed. The nonlinear coupling function Q was mistakenly identified with the non-infinitesimal phase-response curve (PRC). Numerical simulations were used to compute the PRCs corresponding to the Q functions, confirming a qualitative similarity between PRC and the coupling function Q in all cases.
Article
Physics, Multidisciplinary
Ernest Montbrio, Diego Pazo
PHYSICAL REVIEW LETTERS
(2020)
Article
Mathematics, Applied
Pau Clusella, Bastian Pietras, Ernest Montbrio
Summary: Researchers derive a Kuramoto model corresponding to a weakly coupled population of nearly identical quadratic integrate-and-fire neurons with both electrical and chemical coupling. They find that the ratio of chemical to electrical coupling critically determines the synchronization properties of the network. They also demonstrate that the presence of both electrical and chemical coupling is necessary for chimera states to exist.
Article
Mathematics, Applied
Ivan Leon, Diego Pazo
Summary: This study demonstrates the usefulness of a moment-based scheme in reproducing the dynamics of infinitely many oscillators. It analyzes Gaussian heterogeneities and tests the effects of truncating the moment system and implementing different closures in the Kuramoto model. The moment-based approach proves to be more efficient than direct simulation of a large oscillator ensemble.
Article
Neurosciences
Yonatan Sanz Perl, Gorka Zamora-Lopez, Ernest Montbrio, Marti Monge-Asensio, Jakub Vohryzek, Sol Fittipaldi, Cecilia Gonzalez Campo, Sebastian Moguilner, Agustin Ibanez, Enzo Tagliazucchi, B. T. Thomas Yeo, Morten L. Kringelbach, Gustavo Deco
Summary: The role of heterogeneities in brain dynamics, specifically in synchronous behavior, is explored using computational models. Models with oscillations better reproduce empirical properties when considering both structural and functional regional heterogeneities.
NETWORK NEUROSCIENCE
(2023)
Article
Physics, Fluids & Plasmas
Ivan Leon, Diego Pazo
Summary: The emergence of collective synchrony from an incoherent state is described by the Kuramoto model, which needs to be extended to quadratic order for comprehensive analysis. The extended model exhibits complex phenomena, such as secondary instability and collective chaos, at certain parameter values.
Article
Physics, Fluids & Plasmas
David Velasco, Juan M. Lopez, Diego Pazo
Summary: Globally coupled maps (GCMs) are prototypical examples of high-dimensional dynamical systems where an ensemble of weakly coupled identical chaotic units form GCMs typically exhibit hyperchaotic turbulent state. Recent study shows that in turbulent GCMs with positive multipliers, the largest Lyapunov exponent (LE) does not follow the logarithmic relationship as previously predicted, but follows a power-law scaling instead.
Article
Physics, Fluids & Plasmas
Ivan Leon, Diego Pazo
Article
Physics, Fluids & Plasmas
Bastian Pietras, Federico Devalle, Alex Roxin, Andreas Daffertshofer, Ernest Montbrio
Article
Physics, Fluids & Plasmas
Ivan Leon, Diego Pazo