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Energy and momentum in multiple metric theories (1211.5985v3)
Published 26 Nov 2012 in gr-qc
Abstract: We derive the expressions for canonical energy, momentum, and angular momentum for multiple metric theories. We prove that although the metric fields are generally interacting, the total energy is the sum of conserved energies corresponding to each metric. A positive energy theorem is given as a result. In addition, we present an Hamiltonian formalism for a subgroup of multi-metric theories.
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