Abstract
The Lagrangian formulation of classical field theories and, in particular, general relativity leads to a coordinate-free, fully covariant analysis of these constrained systems. This paper applies multisymplectic techniques to obtain the analysis of Palatini and self-dual gravity theories as constrained systems, which have been studied so far in the Hamiltonian formalism. The constraint equations are derived while paying attention to boundary terms, and the Hamiltonian constraint turns out to be linear in the multimomenta. The equivalence with Ashtekar’s formalism is also established. The whole constraint analysis, however, remains covariant in that the multimomentum map is evaluated onany space-like hypersurface. This study is motivated by the non-perturbative quantization programme of general relativity.
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