Directed percolation in temporal networks

Arash Badie Modiri*, Abbas K. Rizi, Marton Karsai*, Mikko Kivelä*

*Corresponding author for this work

Research output: Contribution to journalLetterScientificpeer-review

5 Citations (Scopus)
63 Downloads (Pure)

Abstract

Connectivity and reachability on temporal networks, which can describe the spreading of a disease, the dissemination of information, or the accessibility of a public transport system over time, have been among the main contemporary areas of study in complex systems for the last decade. However, while isotropic percolation theory successfully describes connectivity in static networks, a similar description has not yet been developed for temporal networks. Here, we address this problem and formalize a mapping of the concept of temporal network reachability to percolation theory. We show that the limited-waiting-time reachability, a generic notion of constrained connectivity in temporal networks, displays a directed percolation phase transition in connectivity. Consequently, the critical percolation properties of spreading processes on temporal networks can be estimated by a set of known exponents characterizing the directed percolation universality class. This result is robust across a diverse set of temporal network models with different temporal and topological heterogeneities, while by using our methodology we uncover similar reachability phase transitions in real temporal networks too. These findings open up an avenue to apply theory, concepts, and methodology from the well-developed directed percolation literature to temporal networks.
Original languageEnglish
Article numberL022047
Pages (from-to)1-7
Number of pages7
JournalPHYSICAL REVIEW RESEARCH
Volume4
Issue number2
DOIs
Publication statusPublished - 25 May 2022
MoE publication typeB1 Non-refereed journal articles

Keywords

  • Directed percolation
  • temporal networks
  • reachability
  • critical phenomena

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