Distorted stability pattern and chaotic features for quantized prey-predator-like dynamics

• Tipo: Artigo em Revista Científica Internacional
• Data: 2023

Autores

Bernardini, AE (Autor) Outra; Bertolami, O (Autor) FCUP

Revista

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Título: PHYSICAL REVIEW E

Vol. 107

ISSN: 2470-0045

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 2 Citações

Outras Informações

ID Authenticus: P-00Y-6WJ

DOI: 10.1103/physreve.107.044201

Abstract (EN): Nonequilibrium and instability features of prey-predator-like systems associated to topological quantum do-mains emerging from a quantum phase-space description are investigated in the framework of the Weyl-Wigner quantum mechanics. Reporting about the generalized Wigner flow for one-dimensional Hamiltonian systems, H(x, k), constrained by partial differential 2H/ partial differential x partial differential k = 0, the prey-predator dynamics driven by Lotka-Volterra (LV) equations is mapped onto the Heisenberg-Weyl noncommutative algebra, [x, k] = i, where the canonical variables x and k are related to the two-dimensional LV parameters, y = e-x and z = e-k. From the non-Liouvillian pattern driven by the associated Wigner currents, hyperbolic equilibrium and stability parameters for the prey-predator-like dynamics are then shown to be affected by quantum distortions over the classical background, in correspondence with nonstationarity and non-Liouvillianity properties quantified in terms of Wigner currents and Gaussian ensemble parameters. As an extension, considering the hypothesis of discretizing the time parameter, nonhyper-bolic bifurcation regimes are identified and quantified in terms of z - y anisotropy and Gaussian parameters. The bifurcation diagrams exhibit, for quantum regimes, chaotic patterns highly dependent on Gaussian localization. Besides exemplifying a broad range of applications of the generalized Wigner information flow framework, our results extend, from the continuous (hyperbolic regime) to discrete (chaotic regime) domains, the procedure for quantifying the influence of quantum fluctuations over equilibrium and stability scenarios of LV driven systems.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11