Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-01-20
Class.Quant.Grav. 21 (2004) 1459-1465
Physics
High Energy Physics
High Energy Physics - Theory
10 pages, no figures
Scientific paper
10.1088/0264-9381/21/6/013
By embedding Einstein's original formulation of GR into a broader context we show that a dynamic covariant description of gravitational stress-energy emerges naturally from a variational principle. A tensor $T^G$ is constructed from a contraction of the Bel tensor with a symmetric covariant second degree tensor field $\Phi$ and has a form analogous to the stress-energy tensor of the Maxwell field in an arbitrary space-time. For plane-fronted gravitational waves helicity-2 polarised (graviton) states can be identified carrying non-zero energy and momentum.
Dereli Tekin
Tucker Robin W.
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