Improved Energy-Momentum Currents in Metric-Affine Spacetime

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dc.creatorHecht, Ralf
dc.creatorHehl, Friedrich W.
dc.creatorMcCrea, J. Dermott
dc.creatorMielke, Eckehard W.
dc.creatorNe'eman, Yuval
dc.date1992-10-15
dc.date.accessioned2026-07-07T10:57:53Z
dc.date.available2026-07-07T10:57:53Z
dc.descriptionIn Minkowski spacetime it is well-known that the canonical energy-momentum current is involved in the construction of the globally conserved currents of energy-momentum and total angular momentum. For the construction of conserved currents corresponding to (approximate) scale and proper conformal symmetries, however, an improved energy-momentum current is needed. By extending the Minkowskian framework to a genuine metric-affine spacetime, we find that the affine Noether identities and the conformal Killing equations enforce this improvement in a rather natural way. So far, no gravitational dynamics is involved in our construction. The resulting dilation and proper conformal currents are conserved provided the trace of the energy-momentum current satisfies a (mild) scaling relation or even vanishes.
dc.description14pp
dc.identifierhttps://arxiv.org/abs/gr-qc/9210009
dc.identifierhttp://arxiv.org/abs/gr-qc/9210009
dc.identifierPhys.Lett.A172:13-20,1992
dc.identifierdoi:10.1016/0375-9601(92)90182-L
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186909
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleImproved Energy-Momentum Currents in Metric-Affine Spacetime
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