Collective dynamics of delay-coupled limit cycle oscillators

Pramana

Abhijit Sen1¹  George L Johnston³  Ramana Dodla² 

[1] Institute for Plasma Research, Bhat, Gandhinagar 382 428, India$$;Center for Neural Science, New York University, New York, NY 10003, USA$$;EduTron Corp., 5 Cox Road, Winchester, MA 01890, USA$$

关键词: Coupled oscillators;    time delay;    Hopf bifurcation;    amplitude death;    synchronization;    phase locking.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Coupled limit cycle oscillators with instantaneous mutual coupling offer a useful but idealized mathematical paradigm for the study of collective behavior in a wide variety of biological, physical and chemical systems. In most real-life systems however the interaction is not instantaneous but is delayed due to finite propagation times of signals, reaction times of chemicals, individual neuron firing periods in neural networks etc. We present a brief overview of the effect of time-delayed coupling on the collective dynamics of such coupled systems. Simple model equations describing two oscillators with a discrete time-delayed coupling as well as those describing linear arrays of a large number of oscillators with time-delayed global or local couplings are studied. Analytic and numerical results pertaining to time delay induced changes in the onset and stability of amplitude death and phase-locked states are discussed. A number of recent experimental and theoretical studies reveal interesting new directions of research in this field and suggest exciting future areas of exploration and applications.

【 授权许可】

Unknown