https://doi.org/10.1140/epjc/s10052-024-13631-7
Regular Article
Symplectic quantization and general constraint structure of a prototypical second-class system
1
Universidade Estadual do Sudoeste da Bahia, DCEN, Rodovia BR 415, Km 03, S/N, 45700-000, Itapetinga, Brazil
2
PROFÍSICA–Programa de Pós-Graduação em Física, Universidade Estadual de Santa Cruz, 45650-000, Ilhéus, Bahia, Brazil
3
Department of Physics, Chandigarh University, 140413, Mohali, India
Received:
4
June
2024
Accepted:
20
November
2024
Published online:
3
December
2024
We discuss a general prototypical constrained Hamiltonian system with a broad application in quantum field theory and similar contexts where dynamics is defined through a functional action obeying a stationarity principle. The prototypical model amounts to a Dirac–Bergmann singular system, whose constraints restrict the actual dynamics to occur within a differential submanifold, as is the case in the major part of field theoretical models with gauge symmetry. We apply the Dirac–Bergmann algorithm in its full generality unraveling a total of 4m second-class constraints and obtain the corresponding Dirac brackets algebra in phase space. We follow with the Faddeev–Jackiw–Barcelos–Wotzasek approach in which the geometric character of the mentioned submanifold is emphasized by means of an internal metric function encoding its symplectic properties. We consider two straightforward examples, applying our general results to constrained motion along a toroidal geometry and to a Lorentz violating toy model in field theory. Since toroidal geometry has been recently used in cosmological models, we suggest how our results could lead to different proposals for the shape of the universe in cosmology.
© The Author(s) 2024
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