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Delay-controlled heterogeneous nucleation in adaptive dynamical networks

R. Anand1, Jan Fialkowski2,3, V. K. Chandrasekar1, and R. Suresh1,*

  • *Contact author: suresh@eee.sastra.edu
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Phys. Rev. E 114, 044221 – Published 26 October, 2026

DOI: https://doi.org/10.1103/3cct-tlk7

Abstract

Phase transitions constitute fundamental mechanisms underlying abrupt or qualitative changes in the collective dynamics of interacting units across a wide range of natural and engineered systems. In dynamical networks, such transitions lead to significant reorganization in the coordinated behavior of coupled elements. In adaptive dynamical networks, the connectivity evolves dynamically in response to the states of the nodes, resulting in a coevolution of the structure and dynamics. In this work, we report two distinct forms of heterogeneous nucleation that give rise to single-step and multistep phase transitions toward global synchronization in finite-size adaptive networks with connection delays. We demonstrate that the nature of the nucleation transition is governed by both the presence and magnitude of the delay, as well as the class of natural frequency distribution. Using a collective coordinate framework, we develop a mean-field description of cluster dynamics and derive an analytical upper bound condition for the existence of two-cluster states, which shows excellent agreement with numerical simulations. Furthermore, we extend the analysis to systems with distributed delays and obtain corresponding analytical conditions. Our results provide a theoretical framework for understanding synchronization transitions in adaptive networks with time-delayed interactions.

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Outline

Information

Phys. Rev. E 114, 044221– Published 26 October, 2026
  • Received 2 April 2026
  • Revised 22 August 2026
  • Accepted 1 October 2026
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