Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1993-10-05
Phys.Rev. D49 (1994) 5173-5181; Erratum-ibid. D52 (1995) 3753
Physics
High Energy Physics
High Energy Physics - Theory
18 pages in Plain TeX, MIT-CTP-2245
Scientific paper
10.1103/PhysRevD.49.5173
We discuss general properties of the conservation law associated with a local symmetry. Using Noether's theorem and a generalized Belinfante symmetrization procedure in 3+1 dimensions, a symmetric energy-momentum (pseudo) tensor for the gravitational Einstein-Hilbert action is derived and discussed in detail. In 2+1 dimensions, expressions are obtained for energy and angular momentum arising in the $ISO(2,1)$ gauge theoretical formulation of Einstein gravity. In addition, an expression for energy in a gauge theoretical formulation of the string-inspired 1+1 dimensional gravity is derived and compared with the ADM definition of energy.
Bak Dongsu
Cangemi Daniel
Jackiw Roman
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