The geometry of the solution space of first order Hamiltonian field theories I: From particle dynamics to free electrodynamics

Aug 30, 2022
Published in:
  • J.Geom.Phys. 204 (2024) 105279
  • Published: Jul 17, 2024
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Abstract: (Elsevier B.V.)
We analyse the problem of defining a Poisson bracket structure on the space of solutions of the equations of motions of first order Hamiltonian field theories. The cases of Hamiltonian mechanical point systems – as a (0+1)-dimensional field – and more general field theories without gauge symmetries are addressed by showing the existence of a symplectic (and, thus, a Poisson) structure on the space of solutions. Also the easiest case of gauge theory, namely free electrodynamics, is considered: within this problem, a pre-symplectic tensor on the space of solutions is introduced, and a Poisson structure is induced in terms of a flat connection on a suitable bundle associated to the theory.
  • Multisymplectic geometry
  • Poisson brackets
  • Field theories
  • Peierls brackets
  • Space of solutions