On the classical central charge
arXiv:hep-th/0410111 · doi:10.1088/0264-9381/22/19/006
Abstract
In the canonical formulation of a classical field theory, symmetry properties are encoded in the Poisson bracket algebra, which may have a central term. Starting from this well understood canonical structure, we derive the related Lagrangian form of the central term.
23 pages, RevTeX, no figures; introduction improved, a few references added