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2004 Class. Quantum Grav. 21 3301-3308 doi: 10.1088/0264-9381/21/13/012
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Abstract. We calculate the Hilbert action for the Bondi–Sachs metrics. It yields the Einstein vacuum equations in a closed form. Following the Dirac approach to constrained systems we investigate the related Hamiltonian formulation. For regular null surfaces the Hamiltonian defines an energy which coincides with the Bondi mass and is positive.
PACS number: 04.20.Fy
Print publication: Issue 13 (7 July 2004) |
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