2006/05/31 by D. M. Gitman, Д. М. Гитман, Vladislav Kupriyanov +1
Mathematics · Physics and Astronomy · #Algorithm #Applied mathematics #Canonical quantization #Classical mechanics #Cosmology and Gravitation Theories #Equations of motion #Mathematical analysis #Mathematics #Physics #Quantization (signal processing) #Quantum Mechanics and Applications #Quantum chaos and dynamical systems #Quantum mechanics #hep-th #quant-ph
paper · pdf · doi:10.1140/epjc/s10052-007-0230-x
published as Eur.Phys.J.C50:691-700,2007 · 13 pages
openalex publication_date 2007/02/20 · arxiv created 2007/02/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present an approach to the canonical quantization of systems with equations of motion that are historically called non-Lagrangian equations. Our viewpoint of this problem is the following: despite the fact that a set of differential equations cannot be directly identified with a set of Euler-Lagrange equations, one can reformulate such a set in an equivalent first-order form which can always be treated as the Euler-Lagrange equations of a certain action. We construct such an action explicitly. It turns out that in the general case the hamiltonization and canonical quantization of such an action are non-trivial problems, since the theory involves time-dependent constraints. We adopt the general approach of hamiltonization and canonical quantization for such theories (Gitman, Tyutin, 1990) to the case under consideration. There exists an ambiguity (not reduced to a total time derivative) in associating a Lagrange function with a given set of equations. We present a complete description of this ambiguity. The proposed scheme is applied to the quantization of a general quadratic theory. In addition, we consider the quantization of a damped oscillator and of a radiating point-like charge.