Parametrization dependence of the energy-momentum tensor and the metric
Journal or Book Title
PHYSICAL REVIEW D
We use results by Kirilin to comment that in general relativity the nonleading terms in the energy-momentum tensor of a particle depends on the parameterization of the gravitational field. The classical observables are parameterization independent after a change in coordinates. The quantum effects that emerge within the same calculation of the metric also depend on the parameterization and a full quantum calculation requires the inclusion of further diagrams. However, within a given parameterization the quantum effects calculated by us in a previous paper are well defined. Flaws of Kirilin’s proposed alternate metric definition are described and we explain why the diagrams that we calculated are the appropriate ones.
Bjerrum-Bohr, NEJ; Donoghue, JF; and Holstein, BR, "Parametrization dependence of the energy-momentum tensor and the metric" (2007). PHYSICAL REVIEW D. 93.
Retrieved from https://scholarworks.umass.edu/physics_faculty_pubs/93