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Multistability and period-adding in a logarithmic Lorenz system

Author

Listed:
  • Angela da Silva

    (Departamento de Física, Universidade do Estado de Santa Catarina, 89219-710 Joinville, Brazil)

  • N. C. Pati

    (Department of Mathematics, The University of Burdwan, Burdwan-713104, West Bengal, India)

  • Paulo C. Rech

    (Departamento de Física, Universidade do Estado de Santa Catarina, 89219-710 Joinville, Brazil)

Abstract

In this paper, we design and explore a novel 3D autonomous nonlinear system with logarithmic nonlinearity. It is framed from the Lorenz model by replacing the variable y in the second equation by the nonlinear logarithmic term ln|y|. The bi-parametric dynamics of the modeled system is presented. Studies reveal the emergence of shrimp-shaped periodic structures in chaotic regime with period-adding phenomenon, and coexisting periodic-chaotic attractors, which do not occur in the Lorenz model. The stability, bifurcation patterns, and chaotic behaviors of the system are explored with the aid of bifurcation diagrams, phase portraits and Lyapunov exponents. The complexity of the basin sets for the coexisting attractors is also studied.

Suggested Citation

  • Angela da Silva & N. C. Pati & Paulo C. Rech, 2022. "Multistability and period-adding in a logarithmic Lorenz system," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 33(05), pages 1-12, May.
    • Handle: RePEc:wsi:ijmpcx:v:33:y:2022:i:05:n:s0129183122500620
    DOI: 10.1142/S0129183122500620
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    Cited by:

    1. N. C. Pati, 2023. "Bifurcations and multistability in a physically extended Lorenz system for rotating convection," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 96(8), pages 1-15, August.

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