| Full text | |
| Author(s): |
Brugnago, Eduardo L.
;
Gabrick, Enrique C.
;
Iarosz, Kelly C.
;
Szezech Jr, Jose D.
;
Viana, Ricardo L.
;
Batista, Antonio M.
;
Caldas, Ibere L.
Total Authors: 7
|
| Document type: | Journal article |
| Source: | Chaos; v. 33, n. 12, p. 12-pg., 2023-12-01. |
| Abstract | |
In this work, we study the dynamics of a susceptible-exposed-infectious-recovered-susceptible epidemic model with a periodic time-dependent transmission rate. Emphasizing the influence of the seasonality frequency on the system dynamics, we analyze the largest Lyapunov exponent along parameter planes finding large chaotic regions. Furthermore, in some ranges, there are shrimp-like periodic structures. We highlight the system multistability, identifying the coexistence of periodic orbits for the same parameter values, with the infections maximum distinguishing by up one order of magnitude, depending only on the initial conditions. In this case, the basins of attraction have self-similarity. Parametric configurations, for which both periodic and non-periodic orbits occur, cover 13.20% of the evaluated range. We also identified the coexistence of periodic and chaotic attractors with different maxima of infectious cases, where the periodic scenario peak reaches approximately 50% higher than the chaotic one. (AU) | |
| FAPESP's process: | 21/12232-0 - Chaotic particle transport |
| Grantee: | Eduardo Luís Brugnago |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 22/04251-7 - Fractal Structures in Plasma Physics |
| Grantee: | Iberê Luiz Caldas |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - Brazil |
| FAPESP's process: | 18/03211-6 - Non linear dynamics |
| Grantee: | Iberê Luiz Caldas |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 22/13761-9 - Complex Systems Dynamics |
| Grantee: | Iberê Luiz Caldas |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - Brazil |