A new Hamiltonian formalism for singular Lagrangian theories

Details A new Hamiltonian formalism for singular Lagrangian theories A new Hamiltonian formalism for singular Lagrangian theories

2009-09-14

arxiv.org/abs/0909.2695v3

Journal of Kharkov National University, ser. Nuclei, Particles and Fields.-2011.-V.969.-N3(51).-P. 34-39

Physics

Mathematical Physics

9 pages

Scientific paper

We introduce a version of the Hamiltonian formalism based on the Clairaut equation theory, which allows us a self-consistent description of systems with degenerate (or singular) Lagrangian. A generalization of the Legendre transform to the case, when the Hessian is zero is done using the mixed (envelope/general) solutions of the multidimensional Clairaut equation. The corresponding system of equations of motion is equivalent to the initial Lagrange equations, but contains "nondynamical" momenta and unresolved velocities. This system is reduced to the physical phase space and presented in the Hamiltonian form by introducing a new (non-Lie) bracket.

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