Relativistically covariant formulation of the canonical theory of classical fields II
arXiv:hep-th/0010284
Abstract
A covariant description of the canonical theory for interacting classical fields is developed on a space-like hypersurface. An identity invariant under the canonical transformations is obtained. The identity follows a canonical equation in which the interaction Hamiltonian density genarates a deformation of the space-like hypersurface. The equation just corresponds to the Yang-Feldman equation in the Heisenberg pictures in quantum field theory.
arXiv comment11 pages, 1 EPS figure, uses revtex.sty