Submitting Campus
Daytona Beach
Department
Mathematics
Document Type
Article
Publication/Presentation Date
1-2016
Abstract/Description
The nonlinear pseudo-oscillator recently tackled by Gadella and Lara is mapped to an Emden–Fowler (EF) equation that is written as an autonomous two-dimensional ODE system for which we provide the phase-space analysis and the parametric solution. Through an invariant transformation we find periodic solutions to a certain class of EF equations that pass an integrability condition. We show that this condition is necessary to have periodic solutions and via the ODE analysis we also find the sufficient condition for periodic orbits. EF equations that do not pass integrability conditions can be made integrable via an invariant transformation which also allows us to construct periodic solutions to them. Two other nonlinear equations, a zero-frequency Ermakov equation and a positive power Emden–Fowler equation, are discussed in the same context.
Publication Title
Physics Letters A
DOI
https://doi.org/10.1016/j.physleta.2015.11.009
Publisher
Elsevier
Scholarly Commons Citation
Mancas, S., & Rosu, H. C. (2016). Existence of Periodic Orbits in Nonlinear Oscillators of Emden-Fowler Form. Physics Letters A, 380(3). https://doi.org/10.1016/j.physleta.2015.11.009
