107 citations · 1.1k across the 43 of their papers we have counts for
20 papers · 1 filter
Waveform Proportionality and Taylor's Law Induced by Synchronization of Periodic and Chaotic Oscillators
Yuzuru Mitsui, Hiroshi Kori
Taylor's law (TL), the scaling relationship between the mean and variance, has been observed in various fields. However, the underlying reasons why TL is so widely observed, why th…
Synchronization and its slow decay in noisy oscillators with simplicial interactions
Yuichiro Marui, Hiroshi Kori
Previous studies on oscillator populations with two-simplex interaction have reported novel phenomena such as discontinuous desynchronization transitions and multistability of sync…
Two distinct transitions in a population of coupled oscillators with turnover: desynchronization and stochastic oscillation quenching
Ayumi Ozawa, Hiroshi Kori
Synchronization, which is caused by mutual coupling, and turnover, which is the replacement of old components with new ones, are observed in various open systems consisting of many…
Synchronization approach to achieving maximum power and thermal efficiency for weakly-coupled low-temperature-differential Stirling engines
Songhao Yin, Hiroshi Kori, Yuki Izumida
Low-temperature-differential (LTD) Stirling engines are heat engines that can operate autonomously with a slight temperature difference between low-temperature heat reservoirs and…
An extended Hilbert transform method for reconstructing the phase from an oscillatory signal
Akari Matsuki, Hiroshi Kori, Ryota Kobayashi
Rhythmic activity is ubiquitous in biological systems from the cellular to organism level. Reconstructing the instantaneous phase is the first step in analyzing the essential mecha…
Partial synchronization and community switching in phase-oscillator networks and its analysis based on a bidirectional, weighted chain of three oscillators
Masaki Kato, Hiroshi Kori
Complex networks often possess communities defined based on network connectivity. When dynamics undergo in a network, one can also consider dynamical communities; i.e., a group of…
Synchronization and stability analysis of an exponentially diverging solution in a mathematical model of asymmetrically interacting agents
Yusuke Kato, Hiroshi Kori
This study deals with an existing mathematical model of asymmetrically interacting agents. We analyze the following two previously unfocused features of the model: (i) synchronizat…
Feedback-induced desynchronization and oscillation quenching in a population of globally coupled oscillators
Ayumi Ozawa, Hiroshi Kori
Motivated from a wide range of applications, various methods to control synchronization in coupled oscillators have been proposed. Previous studies have demonstrated that global fe…
Noise stability of synchronization and optimal network structures
Yuriko Katoh, Hiroshi Kori
We provide a theoretical framework for quantifying the expected level of synchronization in a network of noisy oscillators. Through linearization around the synchronized state, we…
Partial synchronization of relaxation oscillators with repulsive coupling in autocatalytic integrate-and-fire model and electrochemical experiments
Hiroshi Kori, István Z. Kiss, Swati Jain +1
Experiments and supporting theoretical analysis is presented to describe the synchronization patterns that can be observed with a population of globally coupled electrochemical osc…
Energetics of synchronization in coupled oscillators rotating on circular trajectories
Yuki Izumida, Hiroshi Kori, Udo Seifert
We derive a concise and general expression of the energy dissipation rate for coupled oscillators rotating on circular trajectories by unifying the nonequilibrium aspects with the…
Reentrant transition in coupled noisy oscillators
Yasuaki Kobayashi, Hiroshi Kori
We report on a novel type of instability observed in a noisy oscillator unidirectionally coupled to a pacemaker. Using a phase oscillator model, we find that, as the coupling stren…
Clustering in Globally Coupled Oscillators Near a Hopf Bifurcation: Theory and Experiments
Hiroshi Kori, Yoshiki Kuramoto, Swati Jain +2
A theoretical analysis is presented to show the general occurrence of phase clusters in weakly, globally coupled oscillators close to a Hopf bifurcation. Through a reductive pertur…
Coarse-grained description of general oscillator networks
Yuki Izumida, Hiroshi Kori
We propose a novel and systematic method for coarse-graining oscillator networks described by phase equations. Our coarse-graining method enables us to obtain the closed coarse-gra…
Phase synchronization between collective rhythms of globally coupled oscillator groups: noiseless non-identical case
Yoji Kawamura, Hiroya Nakao, Kensuke Arai +2
Phase synchronization between collective oscillations exhibited by two weakly interacting groups of non-identical phase oscillators with internal and external global sinusoidal cou…
Phase synchronization between collective rhythms of globally coupled oscillator groups: noisy identical case
Yoji Kawamura, Hiroya Nakao, Kensuke Arai +2
We theoretically investigate collective phase synchronization between interacting groups of globally coupled noisy identical phase oscillators exhibiting macroscopic rhythms. Using…
Noise-Induced Synchronization of a Large Population of Globally Coupled Nonidentical Oscillators
Ken H. Nagai, Hiroshi Kori
We study a large population of globally coupled phase oscillators subject to common white Gaussian noise and find analytically that the critical coupling strength between oscillato…
Collective dynamical response of coupled oscillators with any network structure
Hiroshi Kori, Yoji Kawamura, Hiroya Nakao +2
We formulate a reduction theory that describes the response of an oscillator network as a whole to external forcing applied nonuniformly to its constituent oscillators. The phase d…
Collective Phase Sensitivity
Yoji Kawamura, Hiroya Nakao, Kensuke Arai +2
The collective phase response to a macroscopic external perturbation of a population of interacting nonlinear elements exhibiting collective oscillations is formulated for the case…
Synchronization Engineering: Theoretical Framework and Application to Dynamical Clustering
Hiroshi Kori, Craig G. Rusin, Istvan Z. Kiss +1
A method for engineering the behavior of populations of rhythmic elements is presented. The framework, which is based on phase models, allows a nonlinear time-delayed global feedba…