Gauge Independent Quantum Gravitational Corrections to Maxwell's Equation

Abstract

We consider quantum gravitational corrections to Maxwell's equations on flat space background. Although the vacuum polarization is highly gauge dependent, we explicitly show that this gauge dependence is canceled by contributions from the source which disturbs the effective field and the observer who measures it. Our final result is a gauge independent, real and causal effective field equation that can be used in the same way as the classical Maxwell equation.

19 pages, 7 figures, 1 table

References in corpus (3)

• Excitation of Photons by Inflationary Gravitons
• Deducing Cosmological Observables from the S-matrix
• One loop graviton corrections to dynamical photons in de Sitter

Cited by in corpus (2)

• Summing Inflationary Logarithms in Nonlinear Sigma Models
• How Inflationary Gravitons Affect Gravitational Radiation