A Covariant Formalism for Chern–simons Gravity
نویسندگان
چکیده
Chern–Simons type Lagrangians in d = 3 dimensions are analyzed from the point of view of their covariance and globality. We use the transgression formula to find out a new fully covariant and global Lagrangian for Chern–Simons gravity: the price for establishing globality is hidden in a bimetric (or biconnection) structure. Such a formulation allows to calculate from a global and simpler viewpoint the energymomentum complex and the superpotential both for Yang–Mills and gravitational examples.
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