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Finite One-Loop Corrections and Perturbative Gauge Invariance in Quantum Gravity Coupled to Photon Fields

Nicola Grillo
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Abstract

One-loop calculations in quantum gravity coupled to U(1)-Abelian fields (photon fields) are ultraviolet finite and cutoff-free in the framework of causal perturbation theory. We compute the photon loop correction to the graviton propagator and the photon self-energy in second order perturbation theory. Perturbative gauge invariance to second order is shown and generates the gravitational Slavnov-Ward identities.

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Nicola Grillo. 2000-06-22. Finite One-Loop Corrections and Perturbative Gauge Invariance in Quantum Gravity Coupled to Photon Fields. https://arxiv.org/abs/hep-th/9912114

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