中国物理B ›› 2018, Vol. 27 ›› Issue (10): 108902-108902.doi: 10.1088/1674-1056/27/10/108902

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    

Synchronization performance in time-delayed random networks induced by diversity in system parameter

Yu Qian(钱郁), Hongyan Gao(高红艳), Chenggui Yao(姚成贵), Xiaohua Cui(崔晓华), Jun Ma(马军)   

  1. 1 Nonlinear Research Institute, Baoji University of Arts and Sciences, Baoji 721007, China;
    2 Department of Mathematics, Shaoxing University, Shaoxing 312000, China;
    3 School of Systems Science, Beijing Normal University, Beijing 100875, China;
    4 Department of Physics, Lanzhou University of Technology, Lanzhou 730050, China;
    5 King Abdulaziz University, Faculty of Science, Department of Mathematics, NAAM Research Group, Jeddah 21589, Saudi Arabia
  • 收稿日期:2018-01-23 修回日期:2018-07-16 出版日期:2018-10-05 发布日期:2018-10-05
  • 通讯作者: Yu Qian E-mail:qianyu0272@163.com
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11675001, 11675112, 11775020, and 11372122).

Synchronization performance in time-delayed random networks induced by diversity in system parameter

Yu Qian(钱郁)1, Hongyan Gao(高红艳)1, Chenggui Yao(姚成贵)2, Xiaohua Cui(崔晓华)3, Jun Ma(马军)4,5   

  1. 1 Nonlinear Research Institute, Baoji University of Arts and Sciences, Baoji 721007, China;
    2 Department of Mathematics, Shaoxing University, Shaoxing 312000, China;
    3 School of Systems Science, Beijing Normal University, Beijing 100875, China;
    4 Department of Physics, Lanzhou University of Technology, Lanzhou 730050, China;
    5 King Abdulaziz University, Faculty of Science, Department of Mathematics, NAAM Research Group, Jeddah 21589, Saudi Arabia
  • Received:2018-01-23 Revised:2018-07-16 Online:2018-10-05 Published:2018-10-05
  • Contact: Yu Qian E-mail:qianyu0272@163.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11675001, 11675112, 11775020, and 11372122).

摘要:

Synchronization rhythm and oscillating in biological systems can give clues to understanding the cooperation and competition between cells under appropriate biological and physical conditions. As a result, the network setting is appreciated to detect the stability and transition of collective behaviors in a network with different connection types. In this paper, the synchronization performance in time-delayed excitable homogeneous random networks (EHRNs) induced by diversity in system parameters is investigated by calculating the synchronization parameter and plotting the spatiotemporal evolution pattern, and distinct impacts induced by parameter-diversity are detected by setting different time delays. It is found that diversity has no distinct effect on the synchronization performance in EHRNs with small time delay being considered. When time delay is increased greatly, the synchronization performance of EHRN degenerates remarkably as diversity is increased. Surprisingly, by setting a moderate time delay, appropriate parameter-diversity can promote the synchronization performance in EHRNs, and can induce the synchronization transition from the asynchronous state to the weak synchronization. Moreover, the bistability phenomenon, which contains the states of asynchronous state and weak synchronization, is observed. Particularly, it is confirmed that the parameter-diversity promoted synchronization performance in time-delayed EHRN is manifested in the enhancement of the synchronization performance of individual oscillation and the increase of the number of synchronization transitions from the asynchronous state to the weak synchronization. Finally, we have revealed that this kind of parameter-diversity promoted synchronization performance is a robust phenomenon.

关键词: synchronization, time delay, excitable homogeneous random network, diversity

Abstract:

Synchronization rhythm and oscillating in biological systems can give clues to understanding the cooperation and competition between cells under appropriate biological and physical conditions. As a result, the network setting is appreciated to detect the stability and transition of collective behaviors in a network with different connection types. In this paper, the synchronization performance in time-delayed excitable homogeneous random networks (EHRNs) induced by diversity in system parameters is investigated by calculating the synchronization parameter and plotting the spatiotemporal evolution pattern, and distinct impacts induced by parameter-diversity are detected by setting different time delays. It is found that diversity has no distinct effect on the synchronization performance in EHRNs with small time delay being considered. When time delay is increased greatly, the synchronization performance of EHRN degenerates remarkably as diversity is increased. Surprisingly, by setting a moderate time delay, appropriate parameter-diversity can promote the synchronization performance in EHRNs, and can induce the synchronization transition from the asynchronous state to the weak synchronization. Moreover, the bistability phenomenon, which contains the states of asynchronous state and weak synchronization, is observed. Particularly, it is confirmed that the parameter-diversity promoted synchronization performance in time-delayed EHRN is manifested in the enhancement of the synchronization performance of individual oscillation and the increase of the number of synchronization transitions from the asynchronous state to the weak synchronization. Finally, we have revealed that this kind of parameter-diversity promoted synchronization performance is a robust phenomenon.

Key words: synchronization, time delay, excitable homogeneous random network, diversity

中图分类号:  (Patterns)

  • 89.75.Kd
05.65.+b (Self-organized systems) 89.75.Fb (Structures and organization in complex systems)