Phys. Rev. D 55, 3440–3443 (1997)Gauge-invariant effective stress-energy tensors for gravitational wavesReceived 4 September 1996; published in the issue dated 15 March 1997 It is shown that if a generalized definition of gauge invariance is used, gauge-invariant effective stress-energy tensors for gravitational waves and other gravitational perturbations can be defined in a much larger variety of circumstances than has previously been possible. In particular it is no longer necessary to average the stress-energy tensor over a region of spacetime which is larger in scale than the wavelengths of the waves and it is no longer necessary to restrict attention to high frequency gravitational waves. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.55.3440
DOI:
10.1103/PhysRevD.55.3440
PACS:
04.30.-w
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