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arXiv · 1601.04944

Radiative Corrections and the Palatini Action

F. T. Brandt·D. G. C. McKeon
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Abstract

By using the Faddeev-Popov quantization procedure, we demonstrate that the radiative effects computed using the first-order and second-order Einstein-Hilbert action for General Relativity are the same, provided one can discard tadpoles. In addition, we show that the first order form of this action can be used to obtain a set of Feynman rules that involves just two propagating fields and three three-point vertices; using these rules is considerably simpler than employing the infinite number of vertices that occur in the second-order form. We demonstrate this by computing the one-loop, two-point function.

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F. T. Brandt, D. G. C. McKeon. 2016-01-19. Radiative Corrections and the Palatini Action. https://doi.org/10.1103/physrevd.93.105037

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