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# The Gravitational Hamiltonian in the Presence of Non-Orthogonal Boundaries

Classical and Quantum Gravity, (1996)

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This paper generalizes earlier work on Hamiltonian boundary terms by omitting the requirement that the spacelike hypersurfaces $\Sigma_t$ intersect the timelike boundary $\cal B$ orthogonally. The expressions for the action and Hamiltonian are calculated and the required subtraction of a background contribution is discussed. The new featu...More

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