Artículo
Infection fronts in randomly varying transmission-rate media
Fecha de publicación:
09/2024
Editorial:
American Physical Society
Revista:
Physical Review E
ISSN:
2470-0045
e-ISSN:
2470-0053
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We numerically investigate the geometry and transport properties of infection fronts within the spatial SIR model in two dimensions. The model incorporates short-range correlated quenched random transmission rates. Our findings reveal that the critical average transmission rate for the steady-state propagation of the infection is overestimated by the naive mean-field homogenization. Furthermore, we observe that the velocity, profile, and harmfulness of the fronts, given a specific average transmission, are sensitive to the details of randomness. In particular, we find that the harmfulness of the front is larger the more uniform the transmission rate is, suggesting potential optimization in vaccination strategies under constraints like fixed average-transmission rates or limited vaccine resources. The large-scale geometry of the advancing fronts presents nevertheless robust universal features and, for a statistically isotropic and short-range correlated disorder, we get a roughness exponent ≈0.42±0.10 and a dynamical exponent ≈1.6±0.10, which are roughly compatible with the one-dimensional Kardar-Parisi-Zhang (KPZ) universality class. We find that the KPZ term and the disorder-induced effective noise are present and have a kinematic origin.
Palabras clave:
INFECTION FRONTS
,
REACTION DIFFUSION
,
DISORDER
,
COMPUTATIONAL PHYSICS
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Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
Zagarra, Renzo; Laneri, Karina Fabiana; Kolton, Alejandro Benedykt; Infection fronts in randomly varying transmission-rate media; American Physical Society; Physical Review E; 110; 3; 9-2024; 1-9
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