N. Barros e Sá
Abstract
We provide a simultaneous derivation of the Dirac bracket and of the equations of motion for second-class constrained systems when the constraints are time-dependent. The necessity of time-dependent gauge-fixing conditions is shown in the example of parameterized mechanics and is illustrated geometrically.
Keywords
constrained systems / analytical mechanics / Quantum Mechanics / General Relativity and Quantum Cosmology / Mathematical Physics / Quantum Physics
Universe
Volume 11, Number 233
2025 July
