Hamiltonians for Reduced Gravity
classification
🌀 gr-qc
hep-th
keywords
formalismgeneralisedgravityspacetimeboundarycanonicalcodimensioncontributions
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A generalised canonical formulation of gravity is devised for foliations of spacetime with codimension $n\ge1$. The new formalism retains n-dimensional covariance and is especially suited to 2+2 decompositions of spacetime. It is also possible to use the generalised formalism to obtain boundary contributions to the 3+1 Hamiltonian.
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