2020/01/01 by Nikolay A. Kudryashov
Mathematics · Physics and Astronomy · #Differential algebraic equation #Differential equation #Duffing equation #First-order partial differential equation #Fractional Differential Equations Solutions #Hyperbolic partial differential equation #Initial value problem #Integrable system #Inverse scattering transform #Lax pair #Mathematical analysis #Mathematics #Nonlinear Photonic Systems #Nonlinear Waves and Solitons #Nonlinear system #Ordinary differential equation #Partial differential equation #Physics #Quantum mechanics #Separable partial differential equation #nlin.SI
paper · pdf · doi:10.1007/978-3-030-33491-8_3
published as Advanced Technologies in Robotics and Intelligent Systems, Proceedings of ITR 2019, vol 80. Springer, Cham (2020) · 9 pages
openalex publication_date 2020/01/01 · arxiv created 2021/01/26 · arxiv updated 2021/01/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The system of two nonlinear coupled oscillators is studied. As partial case this system of equation is reduced to the Duffing oscillator which has many applications for describing physical processes. It is well known that the inverse scattering transform is one of the most powerful methods for solving the Cauchy problems of partial differential equations. To solve the Cauchy problem for nonlinear differential equations we can use the Lax pair corresponding to this equation. The Lax pair for ordinary differential or systems or for system ordinary differential equations allows us to find the first integrals, which also allow us to solve the question of integrability for differential equations. In this report we present the Lax pair for the system of coupled oscillators. Using the Lax pair we get two first integrals for the system of equations. The considered system of equations can be also reduced to the fourth-order ordinary differential equation and the Lax pair can be used for the ordinary differential equation of fourth order. Some special cases of the system of equations are considered.