Work

Dirac Brackets and Time-Dependent Constraints

Year: 2025

Type: article

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.

Source: Universe

DOI: 10.3390/universe11070233

Author: Nuno Barros e Sá

Institutions: Universidade dos Açores, Institute of Astrophysics and Space Sciences

Language: English

Topic: Relativity and Gravitational Theory

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,930

OpenAlex ID: W4412473054

FWCI: 0.452

Cites: 16

Cited by: 1

Related to: 10