Subdiffusive Activity Spreading in the Diffusive Epidemic Process

Polovnikov, Borislav; Wilke, Patrick und Frey, Erwin (2022): Subdiffusive Activity Spreading in the Diffusive Epidemic Process. In: Physical Review Letters, Bd. 128, Nr. 7

Abstract

The diffusive epidemic process is a paradigmatic example of an absorbing state phase transition in which healthy and infected individuals spread with different diffusion constants. Using stochastic activity spreading simulations in combination with finite-size scaling analyses we reveal two qualitatively different processes that characterize the critical dynamics: subdiffusive propagation of infection clusters and diffusive fluctuations in the healthy population. This suggests the presence of a strong coupling regime and sheds new light on a long-standing debate about the theoretical classification of the system.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 0031-9007
• Sprache: Englisch
• DFG: Gefördert durch die Deutsche Forschungsgemeinschaft (DFG) - 491502892