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arXiv · hep-th/9708102

Geodesics, gravitons and the gauge fixing problem

Diego A. R. Dalvit·Francisco D. Mazzitelli
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Abstract

When graviton loops are taken into account, the background metric obtained as a solution to the one-loop corrected Einstein equations turns out to be gauge fixing dependent. Therefore it is of no physical relevance. Instead we consider a physical observable, namely the trajectory of a test particle in the presence of gravitons. We derive a quantum corrected geodesic equation that includes backreaction effects and is explicitly independent of any gauge fixing parameter.

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Diego A. R. Dalvit, Francisco D. Mazzitelli. 1997-08-19. Geodesics, gravitons and the gauge fixing problem. https://doi.org/10.1103/physrevd.56.7779

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